Official papers

Official 2020 Paper 1 · Q5

Paper 1Algebra

The curve SS has equation

y=px2+6x−qy=px^2+6x-q

where pp and qq are constants.

SS has a line of symmetry at x=−14x=-\frac14 and touches the xx-axis at exactly one point.

What is the value of p+8qp+8q?

A66
B1818
C2121
D2525
E3838

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