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Official 2020 Paper 1 · Q17

Paper 1Algebra

Let c>0c>0. Find the complete set of values of mm in terms of cc such that the graphs of y=mx+cy=mx+c and y=xy=\sqrt x have two points of intersection.

A0<m<14c0<m<\frac1{4c}
B0<m<4c20<m<4c^2
Cm>14cm>\frac1{4c}
Dm<14cm<\frac1{4c}
Em>4c2m>4c^2
Fm<4c2m<4c^2

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