A quadratic graph has $x$-intercepts $(-2,0)$ and $(4,0)$, and passes through $(0,-16)$

Question

A quadratic graph has $x$-intercepts $(-2,0)$ and $(4,0)$, and passes through $(0,-16)$. Find its equation in factorised form. Find its turning point.

Accepted Answer

(a) $y=2(x+2)(x-4)$; (b) Turning point $(1,-18)$.

Quadratic Functions, Equations and Inequalities

Quadratic Functions, Equations and Inequalities

Solution:

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