A curve has equation y = 2x + kx 1 and a line has equation x
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A curve has equation y = 2x² + kx − 1 and a line has equation x + y + k = 0, where k is a constant
a) State the value of k for which the line is a tangent to the curve.
b) For this value of k find the coordinates of the point where the line touches the curve.
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Related Book For 
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
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