Examples with solutions for Increasing and Decreasing Intervals of a Function: Determine whether or not it is possible to create the function

Exercise #1

Is it possible to create an increasing function with the two given points?

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Video Solution

Step-by-Step Solution

We will begin by connecting the two points to each other, and subsequently we should see that we have obtained an increasing function.

Answer

Yes

Exercise #2

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to create an increasing and decreasing function with the two given points?

000

Video Solution

Step-by-Step Solution

To determine if it is possible to create a function that is both increasing and decreasing using two distinct points, consider these steps:

  • Since there are two points, (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) without specific coordinates mentioned, assume x1x2 x_1 \neq x_2 .
  • For simplicity, assume the points are arranged such that x1<x2 x_1 < x_2 .
  • Construct a piecewise function around these points. For example:
    • If a line joins these two points, identify the slope: m=y2y1x2x1 m = \frac{y_2 - y_1}{x_2 - x_1} .
    • This line will either increase (if m>0 m > 0 ) or decrease (if m<0 m < 0 ).
    • To make the function increasing over an interval and decreasing over another, introduce an additional piece at a third point, creating a V or inverse V-shape curve.
    • This piecewise approach will make it such that the function increases on one interval and decreases on another, satisfying both conditions.

In conclusion, it is indeed possible to create a function that has increasing and decreasing properties using the two given points by constructing a piecewise function with additional details.

The correct answer to this is: Possible.

Answer

Possible

Exercise #3

Is it possible to create an increasing function with the two given points?

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Video Solution

Step-by-Step Solution

To determine whether an increasing function can be created through the given two points, we must analyze and understand what conditions such a function satisfies.

An increasing function means that as xx increases, yy, the function’s value, also increases. In simple terms, if we have two points, (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2), then for the function to be increasing, it must be that x1<x2x_1 < x_2 and y1<y2y_1 < y_2.

Starting from this understanding, observe the provided points. Assuming coordinates are (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) with specifics determined visually or contextually:

  • Verify that both points have distinct xx-coordinates such that x1<x2x_1 < x_2.
  • Check and confirm whether their respective yy-coordinates are such that y1<y2y_1 < y_2.

Upon observing plot arrangements, while the horizontal axis marks a left-right progression, the vertical arrangement negates: if corresponding plot layers detected inversely, no increase in height is shown relative to positional depth.

Therefore, observe if x1<x2x_1 < x_2 but y1>y2y_1 > y_2, causing the conclusion that such positional arrangement doesn't naturally derive an increasing function.

Conclusively, since this presented pattern arguably displays a decreasing nature, a true increasing function based on arrangement interpretation from two points is No.

Answer

No

Exercise #4

Is it possible to create an increasing function with the two given points?

000

Video Solution

Step-by-Step Solution

Given two points A A and B B on a plane, we need to determine if a function can pass through these points such that it is increasing.

Consider the definition of an increasing function: For the function to be increasing, if x2>x1 x_2 > x_1 , then it must satisfy y2>y1 y_2 > y_1 .

Let's apply this to the problem:

  • Let the first point be A=(x1,y1) A = (x_1, y_1) and the second point be B=(x2,y2) B = (x_2, y_2) .
  • The function is increasing between these two points if x2>x1 x_2 > x_1 and y2>y1 y_2 > y_1 .

From the information provided, since the graph indicates that the point corresponding to B B is vertically above A A , it follows that:

  • The x x -coordinates are ordered such that x2>x1 x_2 > x_1 .
  • The y y -coordinates satisfy y2>y1 y_2 > y_1 .

Both necessary conditions hold, so it is indeed possible to create an increasing function passing through these two points.

Therefore, the answer to the problem is Yes.

Answer

Yes

Exercise #5

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to generate a decreasing function with the two given points?

000

Video Solution

Step-by-Step Solution

To determine if a decreasing function is possible with the two given points, we need to calculate the slope between them based on the common definition of a decreasing function.

Let's follow these steps:

  • Step 1: Identify the given points.
  • Step 2: Calculate the slope using these points.
  • Step 3: Verify that the slope is negative.

Step 1: The points appear to be roughly at coordinates near (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) according to their positions on the graph, with exact coordinates not provided, we'll assume accurate readings from the visual information.

Step 2: Calculate the slope using the formula:

slope=y2y1x2x1 \text{slope} = \frac{y_2 - y_1}{x_2 - x_1}

Given the visual interpretation:

x1<x2 x_1 < x_2 and y1>y2 y_1 > y_2 , so this ensures the change in yy is negative when divided by a positive change in xx.

Step 3: As the slope slope=y2y1x2x1\text{slope} = \frac{y_2 - y_1}{x_2 - x_1} is negative, the function represented by these points is decreasing.

Therefore, it is POSSIBLE to generate a decreasing function with the two given points.

Answer

Possible

Exercise #6

Is it possible to create a constant function with the two given points?

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Video Solution

Step-by-Step Solution

To solve this problem, we'll examine the two given points to see if a constant function can be defined through them.

A constant function is represented by f(x)=c f(x) = c , where c c is a constant, meaning all y y -coordinates for the function must be the same regardless of x x .

  • Step 1: Identify the y y -coordinates of the given points from the plot.
  • Step 2: Check if these y y -coordinates are identical, indicating the output of the function does not change.
  • Step 3: If both y y -coordinates are the same, a constant function can indeed pass through both points.

Upon inspection, the y y -coordinates of the two points are the same, which satisfies the requirement for a constant function.

Therefore, it is possible to create a constant function using the two given points.

The correct conclusion is: Yes.

Answer

Yes

Exercise #7

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to create an increasing and decreasing function with the two given points?

000

Video Solution

Step-by-Step Solution

To determine if it is possible to create a function that is both increasing and decreasing with the two given points, we first identify that we need these points to serve as part of a curve that captures some increasing and decreasing interval logic.

Given the graphical representation of the two points, let's say Point A is approximately at (x1,y1)(x_1, y_1) and Point B at (x2,y2)(x_2, y_2) where x1<x2x_1 < x_2 and y1y_1 and y2y_2 are different.

The challenge is to connect these points so a section of the curve shows an increase in yy value, followed by a section that shows a decrease, or vice versa. This means that:

  • From Point A to Point B, without other constraints, a simple line might just connect increasing or flat, or decreasing, as a linear function.
  • However, if we can have a part of the function increase to a point CC, and then decrease to Point B, or vice versa, a composite or non-linear function allows variability of slopes.

For example, with polynomial functions or sinusoidal pieces, the behavior can vary such that while it rises and then falls, it can pass the given points.

Under continuity and allowing intervals, this scenario is possible. Between these two given points, you can define intervals I1I_1 and I2I_2 such that part of the function f(x)f(x) is increasing over I1I_1 and decreasing over I2I_2.

Therefore, assuming correct choice of path and function forms, it is possible to create such a function.

In conclusion, the capability of implementing both increasing and decreasing sections through strategic function choice and segmentation confirms: Possible.

Answer

Possible

Exercise #8

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to create an increasing and decreasing function with the two given points?

000

Video Solution

Step-by-Step Solution

To determine whether it is possible to create an increasing and decreasing function using the two given points, we need to consider the concept of piecewise functions, which allow different behavior in different intervals.

Step 1: Recognize the nature of the problem. We have two points, which often prompts the consideration of either a linear or piecewise linear function.

Step 2: Analyze the end behavior. With the two points, we can begin by assuming a segment, a line, or a curve that connects them. To fulfill the request for both increasing and decreasing properties, the simplest approach involves using a piecewise-defined function. This can be achieved by defining one segment that is increasing and another that is decreasing, or vice versa.

Step 3: Implement a piecewise approach. Consider a three-point scenario by hypothetically placing a midpoint between the two existing points. This hypothetical point allows for an increase from the first point to the midpoint and a decrease from the midpoint to the second point. Such a function will satisfy the condition of having both increasing and decreasing segments.

Thus, it is indeed possible to define a piecewise function that achieves increasing behavior over one part and decreasing behavior over another by simply using the points or introducing an intermediate point to toggle between increasing and decreasing segments.

Therefore, the solution to the problem is Possible.

Answer

Possible

Exercise #9

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to generate a decreasing function with the two given points?

000

Video Solution

Answer

Possible

Exercise #10

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to generate a decreasing function with the two given points?

000

Video Solution

Answer

Possible

Exercise #11

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to generate a decreasing function with the two given points?

000

Video Solution

Answer

Impossible

Exercise #12

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to create an increasing and decreasing function with the two given points?

000

Video Solution

Answer

Possible

Exercise #13

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to generate a decreasing function with the two given points?

000

Video Solution

Answer

Possible

Exercise #14

Copy the points and complete the graph of the function according to the instructions, if it is not possible explain why.

Is it possible to create an increasing and decreasing function with the two given points?

000

Video Solution

Answer

Possible