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This page shows questions in the Math 8 Functions public release module at MSDE. 8th Grade Math
"Math 8 Functions"

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Expand All Official Practice Test

This is a multiple choice question that allows you to select several options.

Which sets of ordered pairs represent functions?

Select all that apply.

  1. A.
    {(1,2),(2,3),(3,4)}
  2. B.
    {(2,1),(2,3),(4,1)}
  3. C.
    {(3,1),(4,2),(5,3)}
  4. D.
    {(6,1),(6,2),(6,3)}
  5. E.
    {(7,1),(8,3),(9,3)}
i1

Correcti3

Correcti5

Correcti2

Not a functioni4

Not a function

This is test content.

The equation x plus 3 y equals negative 3 represents a linear function.

Select two points on the coordinate plane to represent the function. A line will be drawn between the two points, and you can then move the points on the line to correct locations.

This is a multiple choice question that allows you to select only one option.

The graph of a function is shown in the following coordinate plane.

The figure shows a graph in the first quadrant of the coordinate plane. The graph contains five points labeled, P, Q, R, S, and T. The points represented in the graph are as follows. Note that all points are approximate. The graph begins with point P at the origin, and it moves upward, and to the right, in a linear fashion until reaching point Q, which is located one fifth of the way across the horizontal axis, and one quarter of the way up the vertical axis. The graph then curves gradually downward, and to the right, until reaching point R, which is located nearly one half of the way across the horizontal axis, and one fifth of the way up the vertical axis. It then curves steeply upward, and to the right, passing through point S, which is located slightly more than halfway across the horizontal axis, and three quarters of the way up the vertical axis, after which it reaches a peak three quarters of the way across the horizontal axis, and near the top of the vertical axis. The graph then curves steeply downward, and to the right, ending at point T, which is located near the end of the horizontal axis, and at the bottom of the vertical axis, aligned with the origin.

Over which interval does the graph show a constant rate of change?

Select one answer.

  1. A.
    From P to Q
  2. B.
    From Q to R
  3. C.
    From R to S
  4. D.
    From S to T
i1

Correcti2

Nonlineari3

Nonlineari4

Nonlinear

This is a question with 2 parts, including a question with drop-down menus from which you must select an option to fill in the blank.

Certain values of linear function J are shown in the following table, where x is the input variable and y is the output variable.

x y
0 2
1 7
2 12

Linear function K is represented by the equation y=3x+8 .

Complete the statements about the slopes and the y -intercepts of the graphs of the functions.

Select from the lists of choices to complete the statements.

The slope of the graph of function J is  
  the slope of the graph of function K.
The y ‑intercept of the graph of function J is  
  the y ‑intercept of the graph of function K.

This is a multiple choice question that allows you to select only one option.

Anton has some money saved for school. To increase the amount he has saved, he got a job and added all the money earned to the amount already saved.

  • Anton was paid a constant rate in dollars per hour at his job.
  • After working 10 hours, the amount he had saved was $450 .
  • After working 20 hours, the amount he had saved was $600 .
  • Anton did not save any other money or spend any of the money he had saved.

Which equation represents y , the amount of money in dollars Anton would have saved after working x hours?

Select one answer.

  1. A.
    y=10x+150
  2. B.
    y=15x+100
  3. C.
    y=15x+300
  4. D.
    y=30x+150