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Find the inverse of the function d(x) = 2x - 4

2 Answers

7 votes

Answer:

see explanation

Explanation:

let y = 2x - 4

Rearrange making x the subject, add 4 to both sides

2x = y + 4 ( divide both sides by 2 )

x =
(y+4)/(2)

Change y back into terms of x, hence


f^(-1)(x) =
(x+4)/(2)

User LLIAJLbHOu
by
7.8k points
0 votes

Answer:

d(x) = 1/2x + 2

Explanation:

Swap x and y:

x = 2y - 4

Add 4 to the other side:

x + 4 = 2y

Divide by 2:

y = 1/2x +2

User Vertisan
by
8.1k points

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