Problem
Find the equation of the inverse. a. \( f(x)=\frac{x-9}{7} \)
Solution
Step 1 ：Step 1: Replace f(x) with y: \( y=\frac{x-9}{7} \)
Step 2 ：Step 2: Swap x and y: \( x=\frac{y-9}{7} \)
Step 3 ：Step 3: Solve for y: \( y=7x+9 \)
Step 1 ：Step 1: Replace f(x) with y: \( y=\frac{x-9}{7} \)
Step 2 ：Step 2: Swap x and y: \( x=\frac{y-9}{7} \)
Step 3 ：Step 3: Solve for y: \( y=7x+9 \)
