Applying Linear Functions Review

A camp charges families a fee of $625 per month for one child and a certain amount more per month for each additional child. Use the graph to write an equation in slope-intercept form to represent the amount a family with x additional children would pay.

• y = 625x + 225

• y = 225x 

• y = 225x + 625

• y =  625

If the linear equation y = 25x + 75 represents the amount of money saved after x months, how much money will be saved after 9 months?

If the linear equation y = -2x + 198 represents Nathan's total weight after x weeks, how much will his weigh after 6 weeks?

What does the slope represent in this situation?

• The sloth runs 1 feet in 3 minutes

• The sloth runs 3 feet in 1 minute

• The sloth runs fast

• The sloth runs 6 feet in 1 minute

• A

• B

• C

• D

• A

• B

• C

• D

The diagram shows a linear function of g. What is the value of k.

• 5

• 4

• 7

• 8

Ben and Julia rented a truck from the same company to move to college. Ben drove 150 miles and paid $64.95 while Julia drove 84 miles and paid $45.15. How many miles could you drive the truck if you did not want to spend more than $105? Round to the nearest mile.

• 195 miles

• 252 miles

• 284 miles

• 350 miles

Fingernails grow at a rate of 3.5 mm (y) per month (x). How long would your fingernails grow in 3 months?

• 10.5 mm

• 3.5 mm

• 7 mm

• 14 mm

A snow storm left 48 inches of snow on the ground in Wolfforth, TX on Saturday. The snow melted at a rate of 2.5 inches per day over the next several days.

Which function can be used to describe the depth of the snow in inches x days from when it first snowed?

• f(x) = 2.5(x + 48)

• f(x) = -2.5(x +48)

• f(x) = 48 + 2.5x

• f(x) = 48 -2.5x