Question

I have to find the inverse of

f(x)=9x+7

please show steps so I can see to understand

Answer 1

first write it as
y = 9x + 7

step1 : interchange the x and y variables

x = 9y + 7
step 2: solve this inverse equation for y

x - 7 = 9y
y = (1/9)x - 7/9 or y = (x-7)/9

so:
1. interchange x and y
2. solve for y