The line y=2x- 3 intersects the curve y=x^2+x-15 at the points (a)(3,3)and(4,5) (b)(-3,-9)and(4,5) (c)(3,3)and(-4,-11) (d)(-3,-9)and(-4,-11).
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Originally Posted by bobby77 The line y=2x- 3 intersects the curve y=x^2+x-15 at the points (a)(3,3)and(4,5) (b)(-3,-9)and(4,5) (c)(3,3)and(-4,-11) (d)(-3,-9)and(-4,-11). At a point of intersection: , so: Now trying the candidates for , we find that , satisfies this equation as does , so (b) must be the answer (assuming the 's are OK which I suppose we can). RonL
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