Question

If f(x)=-2x-4 then f^-1(x)=

Answer 1

y =
`(x+4)/(-2)` or
`(-x)/(2)` -2

Explanation:

This question is asking to find the inverse of the equation therefore you will have to interchange x and y

ie : x= -2y-4

THEN solve for y ( perform opposite operation )

x = -2y -4

(take -4 to the other side ) [it will be a +4 ]

x+ 4 = -2y

NOW take -2 to the other side [ you will divide everything on the left by -2]

`(x+4)/(-2)` ( this could be your final answer )

OR

simplify

( NOT complusory)

`(-x)/(2) - 2`