Question

If f(x)= -15x-5, then f^-1(x)=

Answer 1

(x+5) /-15 = f^-1(x)

Explanation:

f(x)= -15x-5

y = -15x-5

Exchange x and y

x = -15y -5

Solve for y

Add 5 to each side

x+5 = -15y -5+5

x+5 = -15y

Divide by -15

(x+5)/-15 = -15y/-15

(x+5) /-15 = y

(x+5) /-15 = f^-1(x)