Answer:
d(x) = 1/2x + 2
Step-by-step explanation:
Swap x and y:
x = 2y - 4
Add 4 to the other side:
x + 4 = 2y
Divide by 2:
y = 1/2x +2
Answer:
see explanation
Step-by-step explanation:
let y = 2x - 4
Rearrange making x the subject, add 4 to both sides
2x = y + 4 ( divide both sides by 2 )
x = [tex]\frac{y+4}{2}[/tex]
Change y back into terms of x, hence
[tex]f^{-1}[/tex](x) = [tex]\frac{x+4}{2}[/tex]
