Question

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Find the rule of the inverse function

y = 2x + 4

Answer 1

f^-1(x)=x/2+2. i did the math

Answer 2

Explanation:

The inverse is found by interchanging the x and y of the original and then solving for y.

y = 2x + 4 Interchange x and y

x = 2y + 4 Subtract 4 from both sides

x - 4 = 2y Divide the entire equation by 2

x/2 - 4/2 = 2y/2

x/2 - 2 = y or

y = x/2 - 2