Linear Review

Lavar has a $40 balance available on his lunch account. Each school day, he spends $2.50 for his account to buy lunch. Use the graph to find the slope of the line.

• 40

• 1/40

• 2.50

• 1/2.50

The balance of Lavar's lunch account is ________ each school day, so the slope is ________.

• increasing, negative

• increasing, positive

• decreasing, positive

• decreasing, negative

The slope changes by ______ each school day, so the slope is ________.

• $2.50, –2.5

• $2.50, –40

• $40, –2.5

• $40, –40

Tabitha earns money mowing lawns each weekend. She charges customers $15 per hour to mow their lawn, in addition to the $7 flat fee she charges them for gasoline and other supplies. A linear function can be written to find the amount of money Tabitha earns from her side gig. What is the slope of this situation?

• $15

• –$15

• $7

• –$7

Tabitha earns money mowing lawns each weekend. She charges customers $15 per hour to mow their lawn, in addition to the $7 flat fee she charges them for gasoline and other supplies. A linear function can be written to find the amount of money Tabitha earns from her side gig. What is the y-intercept of this situation?

• $15

• –$15

• $7

• –$7

If the data in the table was graphed, it would create a linear function. What is the slope of the line?

• 8.5

• -8.5

• 2

• –2

If the data in the table was graphed, it would create a linear function. What is the y-intercept of the line?

• 8.5

• -8.5

• 2

• –2

At the end of the day, a pizzeria turns off its pizza oven. The table shows the linear relationship between the temperature of the oven after the first five minutes the oven was turned off. What is the rate at which the temperature decreases?

What was the temperature of the oven when it was turned off?

• 425

• 400

• 450

• 300

A web designer charges customers an initial consultation fee plus an hourly rate. The table shows the linear relationship between x, the number of hours and y, the total cost of hiring the designer. Find the rate of change.

• $205

• $195

• $65

• $725