Review Chapter 9

Eric purchased (t) tickets to go on (r) rides. The numbers of rides depend on the number of tickets purchased. Identify the dependent variable.

• r

• t

Kaleb bought (b) bagels for a total (p) price. The price depends on the number of bagels purchased. Identify the independent variable.

• p

• b

Maggie bought (x) tickets for 4 dollars each for a total of (y) dollars. Which equation matches the scenario?

• y=4x

• y=4+x

• x=4y

• x=4+y

Kissnjot went a total of (y) miles at a rate of 60 miles per hour for (x) hours. Which equation matches the scenario?

• y=60x

• y=60+x

• x=60y

• x=60+y

Which ordered pair is a solution for the equation y=15x

• (15,1)

• (30,2)

• (3,45)

• (4,90)

Which ordered pair is a solution for the equation y=x+9

• (3,12)

• (12,3)

• (4,36)

• (5,15)

Which equation matches the table?

• y=15x

• y=x+15

• y=5x+15

• y=5x-15

Which ordered pair represents a solution of the equation y=20x+6?

• (26,1)

• (21,4)

• (4,86)

• (6,136)

Your grandmother always has a jar of cookies on her counter. One day while you are visiting, you eat 5 cookies from the jar. In the equation below, c is the number of cookies remaining in the jar and b is the number of cookies in the jar before your visit. The relationship between these two variables can be expressed by the following equation:

c=b-5. Identify the dependent variable.

• c

• b

You are doing chores to earn your allowance. For each chore you do, you earn $3, c is the number of chores you do, and d is the number of dollars you earn. The relationship between these two variables can be expressed by the following equation: d=3c. Identify the independent variable.

• c

• d