Explain the meaning of the slope, x and y intercept

Question

A phone company charges a base cost of $23 per month and 16 cents per call. Find the linear function C(n) where C is monthly cost in $ and n is the number of phone calls in a month. Explain the meaning of the slope, and x and y intercept for this problem.

Answer 1

C(n) = 0.16n + 23

slope is coefficient of n, showing that as n increases by one, he cost increases by 16 cents. y-intercept is 23 dollars, which is the fixed charge per month without any calls.

There is no "x" intercept because n cannot be negative.