Unit 1 review

The function f(x) = 5()x is reflected over the y-axis. Which equations represent the reflected function? Check all that apply.

square: 4 & 5

Josiah's parents pay him for each chore he completes. He created a table to show his earnings each week for the past month.Which graph correctly depicts his earnings including the last week?

A

Tanisha is graphing the function f(x) = 25()x. She begins by plotting the point (1, 15). Which could be the next point she plots on the graph?

A. (2,9)

Which equation represents the same proportional relationship as the graph?

A. 3/5 x

Aimee noticed her plant grew mc013-1.jpg of an inch every week since it sprouted. She created this graph to show its growth.Which statement about Aimee's graph is true?

A. Aimee's graph is correct because the ratio mc013-3.jpg is equal to 2:3, which her graph shows in each point.

Which is the graph of 3/2(1/3)x?

B

The table below shows the total cost of buying printer ink cartridges for both members and nonmembers of a shopping club. Which statement is supported by the table?

The relationship between the number of cartridges purchased and the total cost is proportional for nonmembers but not for members.

What is the constant of proportionality in the equation x=x/9?

B. 1/9

Breanna set up her media player and created a graph to show what she saved on it. What does point A represent on the graph?

Breanna has 40 songs for every 3 games on her media player.

Enjoli is making cupcakes for a party. She needs 45 cupcakes but the recipe makes 15. If she does not want any leftovers, which point should Enjoli use to determine the amount of strawberries she will need to make her cupcakes?

C

Which function represents exponential decay?

D. 4(2/3) ^x

Consider the two graphs below. Which statement best describes the graphs?

Graph 2 represents a proportional relationship, but graph 1 does not.