Applications of Slope and Intercept

1. A battery is charged.

The percentage of the battery's capacity that is charged as a function of time (in minutes) is graphed.

At what rate is the battery charged?

Choose 1 answer:

A. $20$ percent per minute

B. $1$ percent per minute

C. $10$ percent per minute

D. $2$ percent per minute

2. Suraj took a slice of pizza from the freezer and put it in the oven.

The pizza's temperature (in degrees Celsius) as a function of time (in minutes) is graphed.

What was the pizza's temperature after $2$ minutes?

3. Archimedes drained the water in his tub.

The amount of water left in the tub (in liters) as a function of time (in minutes) is graphed.

How long did it take each time $18$ liters of water were drained?

Choose 1 answer:

A. $\frac {1}{3}$ minute

B. $\frac {1}{4}$ minute

C. $\frac {1}{2}$ minute

D. $1$ minute

4. Karl set out to Alaska in his truck.

The amount of fuel remaining in the truck's tank (in liters) as a function of distance driven (in kilometers) is graphed.

How fast did the truck consume its fuel?

Choose 1 answer:

A. $60$ liters per kilometer

B. $0.40$ liters per kilometer

C. $40$ liters per kilometer

D. $0.60$ per kilometer