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For f : N → Y with f(x) = 4x + 3 onto Y, which formula gives the inverse g(y)?
A(y + 3)/4
B4y − 3
C(y − 3)/4
Dy/4 − 3
Answer & Solution
Correct answer: C. (y − 3)/4
Solving y = 4x + 3 for x gives x = (y − 3)/4, so g(y) = (y − 3)/4.
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