Mathematics for IGCSE & O level - Functions (Section 4 - No. 29) | ExamPlay

Mathematics for IGCSE & O level - Functions (Section 4 - No. 29)

What is the inverse function of f(x)=4x + 5?

(x-5)/4

(x+5)/4

x-5/4

4x-5

Vysvětlení

Solve x=(y+5)/4

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