Transforming linear functions

Question

An athletic club has an application fee of $25 and a monthly membership fee of

$15. The function f models the total cost of a membership for x months. The

function g represents the cost of the membership if the application fee is waived.

Write each function and compare the slopes and y-intercepts of the functions.

Answer 1

f(x)=15x+25 and g(x)=15x

They have same slope 15 .

the f(x) function has y intercept (0,25) and the g(x) function has y intercept (0,0)