Question

Find the inverse of y = 2x - 3.

y = 3x - 2
y = 0.5x + 1.5
y = 2x - 3
y = 0.5x - 1.5

Answer 1

y = 2x - 3
Switch the x and y.
x = 2y - 3
Solve equation for y.
Add 3 to both sides.
x + 3 = 2y
Divide both sides by 2
(x + 3)/2 = y
y = (x + 3)/2
y = x/2 + 3/2
y = 0.5x + 1.5
Option 2