LEAP 2025 Math Grade 8 Chapter 8

1 pt

1.

Tell which description of the function is true.

A

The function is nonlinear and always decreasing.

B

It is not a function.

C

The function is decreasing from –2 to negative infinity and increasing from –2 to infinity

D

The function is decreasing from –2 to –4 and increasing from –2 to 4.

1 pt

2.

Which equation represents a function with a rate of change that is greater than the one shown in the graph below?

A

$y=\u20132x+7$

B

$y=\frac{x}{2-3}$

C

$y=\frac{3}{4}x+4$

D

$y=3x-7$

1 pt

.

**Part B.**

A

Sandra leaves her house and walks to her friend’s house at a constant rate.

B

Sandra leaves her house and walks toward her friend’s house. She stops to check if remembered her phone . She realizes she left it and quickly returns back home to get it.

C

Sandra leaves her friend’s house and walks home at a constant rate.

D

Sandra leaves her house and walks to her friend’s house. On the way there, she stops at the store to get a snack. Then, she continues on to her friend’s house.

1 pt

6.

Which table represents a linear function?

A

B

C

D

1 pt

7.

Compare the rates of change for the functions represented below.

Which statements about the rates of change for Function C and Function D are true? Select all true statements.

A

Function D has a greater rate of change because it has a positive rate of change, and function C does not.

B

Function C has a greater rate of change because it has a positive rate of change, and function D does not.

C

Functions C and D have the same positive rate of change.

D

Functions C and D have the same negative rate of change.

E

The y-intercept of function D is equal to the y-intercept of function C.

F

The y-value when x = 0 for function C is greater than the y-value when x = 0 for Function D.