Function Analysis: Identifying Y = X + 5 on a Graph

Question

Y is a function of X that matches every value of X where the number is greater by 5.

Which graph describes the function?

Video Solution

Solution Steps

00:00 Draw the function graph
00:04 The function equation according to the given data
00:07 Substitute values in X and find the corresponding Y values according to the given data
00:13 Plot each point in our coordinate system
00:19 Always find at least 3 points in order to draw a graph
00:39 Draw the appropriate graph
00:46 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we will sketch the graph of the function Y=X+5 Y = X + 5 .

  • Step 1: Identify key points by calculating a few points for the graph:
    For X=0 X = 0 , Y=0+5=5 Y = 0 + 5 = 5 .
    For X=1 X = 1 , Y=1+5=6 Y = 1 + 5 = 6 .
    For X=2 X = 2 , Y=2+5=7 Y = 2 + 5 = 7 .
  • Step 2: Plot these points on a Cartesian plane.
    - The points (0,5)(0, 5), (1,6)(1, 6), and (2,7)(2, 7) all lie on the line with a slope of 1.
  • Step 3: Draw the straight line through these points extending in both directions.

As Y=X+5 Y = X + 5 represents a line with a slope of 1 and y-intercept of 5, the line will pass through all these points. Comparing this to the provided graph choices, select the graph with positive slope and y-intercept at 5.

The correct graph is choice 2, which shows a line with a slope of 1 and intercepting the y-axis precisely at 5.

Therefore, the graph that describes the function Y=X+5 Y = X + 5 correctly is choice 2.

Answer

111222333444555666–1–1–1111222333444555666777888999101010000