(a)[2]
Determine the value of $x$ when $f(x) = -0.5$.
(b)[2]
Determine $g^{-1}(x)$.
(c)[2]
Determine the value of $x$ when $h(x) = f(13)$.
Mathematics 0580 · IGCSE · Functions
Functions — practice question
The three functions are $f(x) = \dfrac{x}{4} - 3$, $g(x) = 6x - 7$, and $h(x) = 2^x$.