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Mathematics for IGCSE & O level - Functions (Section 4 - No. 1)

What function transforms x to (x-5)/4?
f(x) = 4x+5
f(x) = 4x-5
f(x) = (x+5)/4
f(x) = (x-5)/4

Explanation

Using inverse of the function to identify which one it is.

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