Let $f(x) = 8x - 2x^2$. Part of the graph of $f$ is shown below. Find the $x$-intercepts

Question

Let $f(x) = 8x - 2x^2$. Part of the graph of $f$ is shown below. Find the $x$-intercepts of the graph.[4] Write down the equation of the axis of symmetry. Find the $y$-coordinate of the vertex.[3]

Accepted Answer

(a) $(0,0)$, $(4,0)$ (b)(i) $x=2$ (b)(ii) $8$

Quadratic Functions, Equations and Inequalities - Solving Quadratic Equations

Quadratic Functions, Equations and Inequalities - Solving Quadratic Equations

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