Examples with solutions for Parabola of the Form y=(x-p)²: Finding a stationary point

Exercise #1

Find the intersection of the function

y=(x+4)2 y=(x+4)^2

With the Y

Video Solution

Step-by-Step Solution

To solve this problem, we will find the intersection of the function with the Y-axis by following these steps:

  • Step 1: Recognize that the intersection with the Y-axis occurs where x=0 x = 0 .
  • Step 2: Substitute x=0 x = 0 into the function y=(x+4)2 y = (x+4)^2 .
  • Step 3: Perform the calculation to find the y-coordinate.

Now, let's solve the problem:

Step 1: Identify the Y-axis intersection by setting x=0 x = 0 .
Step 2: Substitute x=0 x = 0 into the function:

y=(0+4)2=42=16 y = (0+4)^2 = 4^2 = 16

Step 3: The intersection point on the Y-axis is (0,16)(0, 16).

Therefore, the solution to the problem is (0,16)(0, 16).

Answer

(0,16) (0,16)

Exercise #2

Find the intersection of the function

y=(x2)2 y=(x-2)^2

With the X

Video Solution

Step-by-Step Solution

To solve this problem, we'll find the intersection of the function y=(x2)2 y = (x-2)^2 with the x-axis. The x-axis is characterized by y=0 y = 0 . Hence, we set (x2)2=0 (x-2)^2 = 0 and solve for x x .

Let's follow these steps:

  • Step 1: Set the function equal to zero:

(x2)2=0 (x-2)^2 = 0

  • Step 2: Solve the equation for x x :

Taking the square root of both sides gives x2=0 x - 2 = 0 .

Adding 2 to both sides results in x=2 x = 2 .

  • Step 3: Find the intersection point coordinates:

The x-coordinate is x=2 x = 2 , and since it intersects the x-axis, the y-coordinate is y=0 y = 0 .

Therefore, the intersection point of the function with the x-axis is (2,0)(2, 0).

The correct choice from the provided options is (2,0) (2, 0) .

Answer

(2,0) (2,0)

Exercise #3

Find the intersection of the function

y=(x2)2 y=(x-2)^2

With the Y

Video Solution

Step-by-Step Solution

To determine the intersection of the function y=(x2)2 y = (x-2)^2 with the y-axis, we set x=0 x = 0 , as the y-axis is defined by all points where x=0 x = 0 .

Substituting x=0 x = 0 into the equation:

y=(02)2 y = (0 - 2)^2

Simplifying this expression:

y=(2)2=4 y = (-2)^2 = 4

Thus, the intersection point of the function with the y-axis is (0,4) (0, 4) .

Therefore, the solution to the problem is (0,4) (0, 4) .

Answer

(0,4) (0,4)

Exercise #4

Find the intersection of the function

y=(x6)2 y=(x-6)^2

With the Y

Video Solution

Step-by-Step Solution

To find the intersection of the function y=(x6)2 y = (x-6)^2 with the y-axis, we follow these steps:

  • Step 1: Identify the known function and approach the problem by setting x=0 x = 0 since we are looking for the intersection with the y-axis.

  • Step 2: Substitute x=0 x = 0 into the equation y=(x6)2 y = (x-6)^2 .

  • Step 3: Perform the calculation to find y y .

Now, execute these steps:
Step 1: We are given the function y=(x6)2 y = (x-6)^2 .
Step 2: Substitute x=0 x = 0 into the equation:
y=(06)2 y = (0-6)^2
Step 3: Simplify the expression:
y=(6)2=36 y = (-6)^2 = 36

The point of intersection with the y-axis is therefore (0,36) (0, 36) .

Thus, the solution to the problem is (0,36) (0, 36) .

Answer

(0,36) (0,36)

Exercise #5

Find the intersection of the function

y=(x+3)2 y=(x+3)^2

With the Y

Video Solution

Step-by-Step Solution

To find the intersection of the parabola y=(x+3)2 y = (x+3)^2 with the y-axis, we set x=0 x = 0 since any point on the y-axis has its x-coordinate as zero.

Step-by-step solution:

  • Step 1: Substitute x=0 x = 0 into the equation: y=(0+3)2 y = (0+3)^2 .
  • Step 2: Simplify the expression:
  • y=(3)2 y = (3)^2
  • y=9 y = 9

Therefore, the intersection point of the parabola with the y-axis is (0,9)(0, 9).

Accordingly, among the given choices, the correct choice for the intersection is (0,9)(0, 9).

Answer

(0,9) (0,9)

Exercise #6

Find the intersection of the function

y=(x5)2 y=(x-5)^2

With the Y

Video Solution

Step-by-Step Solution

To find the intersection of the function y=(x5)2 y = (x-5)^2 with the y-axis, we follow these steps:

  • Step 1: Substitute x=0 x = 0 into the function to find the y-intercept.

Let's calculate:
- Substitute x=0 x = 0 into the function: y=(05)2 y = (0-5)^2 .
- Simplifying further, y=(5)2=25 y = (-5)^2 = 25 .

Thus, the intersection of the function y=(x5)2 y = (x-5)^2 with the y-axis occurs at the point (0,25) (0, 25) .

Therefore, the correct answer is (0,25) (0, 25) .

Answer

(0,25) (0,25)

Exercise #7

Find the intersection of the function

y=(x+3)2 y=(x+3)^2

With the X

Video Solution

Step-by-Step Solution

To solve this problem, we will follow these steps:

  • Step 1: Identify the function as y=(x+3)2 y = (x+3)^2 .
  • Step 2: Set y=0 y = 0 to find the intersection with the x-axis.
  • Step 3: Solve (x+3)2=0 (x+3)^2 = 0 to find the x-coordinate.

Let's proceed through each step:
Step 1: We are given the function y=(x+3)2 y = (x+3)^2 .
Step 2: To find where this function intersects the x-axis, set y=0 y = 0 :

(x+3)2=0 (x+3)^2 = 0

Step 3: Solve the equation:
The equation (x+3)2=0 (x+3)^2 = 0 suggests that x+3=0 x+3 = 0 ,
which simplifies to x=3 x = -3 .

Therefore, the intersection point is where x=3 x = -3 and y=0 y = 0 , giving us the intersection at (3,0) (-3, 0) .

Thus, the solution to the problem is (3,0)(-3, 0), corresponding to choice given as (3,0)(-3, 0).

Answer

(3,0) (-3,0)

Exercise #8

Find the intersection of the function

y=(x5)2 y=(x-5)^2

With the X

Video Solution

Step-by-Step Solution

To find the intersection of the parabola y=(x5)2 y = (x-5)^2 with the x-axis, we must set the value of y y to zero since any point on the x-axis has a y-coordinate of zero.

Solving the equation:

  • Set (x5)2=0 (x-5)^2 = 0 .
  • To solve for x x , remove the square by taking the square root of both sides. This yields x5=0 x-5 = 0 .
  • Solve for x x by adding 5 to both sides: x=5 x = 5 .

Thus, the intersection point of the parabola with the x-axis is at (5,0) (5, 0) .

Therefore, the correct answer is (5,0) \boxed{(5,0)} , which corresponds to choice 3.

Answer

(5,0) (5,0)

Exercise #9

Find the intersection of the function

y=(x12)2 y=(x-\frac{1}{2})^2

With the X

Video Solution

Step-by-Step Solution

To find the intersection of the parabola y=(x12)2 y = (x - \frac{1}{2})^2 with the x-axis, we need to set y=0 y = 0 because at the x-axis, the y-coordinate is always zero.

Let's go through the steps:

  • Step 1: Set the equation equal to zero: (x12)2=0 (x - \frac{1}{2})^2 = 0 .
  • Step 2: Solve for x x . A square equals zero only when the base itself is zero, thus:
    x12=0 x - \frac{1}{2} = 0
  • Step 3: Solve this equation for x x :
    x=12 x = \frac{1}{2}

The intersection point on the x-axis has coordinates (x,y)(x, y), where we have found x=12 x = \frac{1}{2} and we know y=0 y = 0 .

Therefore, the intersection of the function with the x-axis is at the point (12,0)(\frac{1}{2}, 0).

Thus, the correct answer is choice 3: (12,0)(\frac{1}{2}, 0).

Answer

(12,0) (\frac{1}{2},0)

Exercise #10

Find the intersection of the function

y=(x+114)2 y=(x+1\frac{1}{4})^2

With the X

Video Solution

Step-by-Step Solution

To find the intersection of the function y=(x+114)2 y = (x + 1\frac{1}{4})^2 with the x-axis, we set y=0 y = 0 since intersections on the x-axis have a y y -coordinate of zero.

Therefore, our equation becomes:

(x+114)2=0 (x + 1\frac{1}{4})^2 = 0 .

To solve this equation, take the square root of both sides:

x+114=0 x + 1\frac{1}{4} = 0 .

Next, solve for x x by subtracting 114 1\frac{1}{4} from both sides:

x=114 x = -1\frac{1}{4} .

Thus, the intersection point of the function with the x-axis is (114,0)(-1\frac{1}{4}, 0).

After checking the provided answer choices, the correct choice is:

: (114,0) (-1\frac{1}{4},0)

Therefore, the solution to the problem is (114,0)(-1\frac{1}{4}, 0).

Answer

(114,0) (-1\frac{1}{4},0)