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

User Ericlee
by
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1 Answer

6 votes

Answer:

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

User Mohit Ganorkar
by
6.4k points