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Official 2019 Paper 1 · Q1

Paper 1Functions & graphsAlgebra

f(x)f(x) is a quadratic function in xx.

The graph of y=f(x)y=f(x) passes through the point (1,−1)(1,-1) and has a turning point at (−1,3)(-1,3).

Find an expression for f(x)f(x).

A−x2−2x+2-x^2-2x+2
B−x2+2x+3-x^2+2x+3
Cx2−2xx^2-2x
Dx2+2x−4x^2+2x-4
E2x2+4x+12x^2+4x+1
F−2x2−4x+5-2x^2-4x+5

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