inverse of functions

Question

y=4x−2

Find four points contained in the inverse.



Answer 1

y=4x -2

inverse is found by switching x and y and solving for y

x=4y-2

4y =x+2

y =x/4 +1/2

points on the inverse are (0,1/2), (2,1) (-2,0), (6,2)

which correspond to points on the original equation, by switching x and y coordinates

(1/2,0), (1,2), (0,-2), (2,6)