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What is the inverse of the function f(x) = 4x + 8?
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9 votes
What is the inverse of the function f(x) = 4x + 8?

User Max Sorin
by
3.3k points

1 Answer

10 votes

Answer:

h(x) = (1/4)x - 2 which is choice A

Explanation:

Replace f(x) with y. Then swap x and y. Lastly, solve for y to get the inverse.

f(x) = 4x+8

y = 4x+8

x = 4y+8

x-8 = 4y

4y = x-8

y = (x-8)/4

y = x/4 - 8/4

y = (1/4)x - 2

h(x) = (1/4)x - 2

User Leyvi
by
3.4k points
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