Additional Mathematics 0606 / Quadratic functions / 2.152.15: Tangent line to a quadratic curve0606/23/O/N/18 — Question 11 · 5 marksMark as done · Save for later · Show all solutionsA line with equation y=−5x+k+5y = -5x + k + 5y=−5x+k+5 is a tangent to a curve with equation y=7−kx−x2y = 7 - kx - x^{2}y=7−kx−x2.(i)Find the two possible values of kkk.[5]▸ Answer▸ Official mark scheme← 2.14: Completing the square and a quartic equation1.5: Line that does not meet a curve →
