Answer:
f⁻¹(x) = -1/3x +4
Explanation:
You want the inverse function when f(x) = -3x +12.
Inverse
The inverse function can be found by solving for y the equation ...
x = f(y)
x = -3y +12
3y = -x +12 . . . . . . . add 3y -x
y = (-x +12)/3 = -1/3x +4
The inverse function is ...
f⁻¹(x) = -1/3x +4
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