TCAP Success Grade 8 MATH Chapter 8

1 pt

2.

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.

1pt

.

**Part B.**

Marcia=

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5.

Match the following graphs with the correct written scenario.

**Part A.**

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 she remembered her mp3 player. 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.

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9.

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.

1 pt

11.

The graph below represents Mikayla’s day. Select the correct description of Mikayla’s day.

A

Mikayla leaves her home and rides the bus to school 10 miles away.

B

Mikayla stays at school for 8 hours.

C

Mikayla rides to dance practice after school with a friend. The dance studio is halfway between her school and home. She stays for one hour.

D

Mikayla’s mom picks her up from dance practice, and they drive home.