Modeling with Linear Functions · Exercise 1
Graph and interpret applications of slope–intercept form of a linear function.
Janis is planning to rent a car while on vacation. The equation C(m)=.25m+10 models the relationship between the cost in dollars, C, per day and the number of miles,m, she drives in one day.
ⓐ Find the cost if Janis drives the car 20 miles one day.
ⓑ Find the cost on a day when Janis drives the car 400 miles.
ⓒ Interpret the slope and y-intercept (or C intercept) of the equation in terms of the variables and units used in this problem.
ⓓ Graph the linear function below. Be sure to show the scale you are using on your coordinate system.
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Algebra and Trigonometry 2e · §4.2 Modeling with Linear Functions · Exercise 1
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