Question

A rental car costs $65.95 if 30 miles are driven and $75.95 if 50 miles are driven. Construct

the equation in slope intercept form that represents the cost of a rental car.

Answer 1

y = 0.5x + 50.95

Explanation:

Given y is total cost while x is total miles

Slope: m = (y2-y1)/(x2-x1)

m = (75.95-65.95)/(50-30) = 10/20 = 0.5

y = mx + b

y = 0.5x + b

75.95 = 0.5(50) + b

b = 50.95

Slope intercept form: y = 0.5x + 50.95