A straight line has gradient m and passes through the point (0, -2). Find the two values of m for which the line is a tangent to the curve y = x^2 - 2x + 7 and, for each value of m, find the coordinates of the point where the line touches the curve.
Find the set of values of p for which the equation \(4x^2 - 24x + p = 0\) has no real roots.
The line \(4y = x + c\), where \(c\) is a constant, is a tangent to the curve \(y^2 = x + 3\) at the point \(P\) on the curve.
(i) Find the value of \(c\).
(ii) Find the coordinates of \(P\).
A curve has equation \(y = 2x^2 - 3x + 1\) and a line has equation \(y = kx + k^2\), where \(k\) is a constant.
(i) Show that, for all values of \(k\), the curve and the line meet. [4]
(ii) State the value of \(k\) for which the line is a tangent to the curve and find the coordinates of the point where the line touches the curve. [4]
The equation of a curve is \(y = 2x + \frac{12}{x}\) and the equation of a line is \(y + x = k\), where \(k\) is a constant.
Find the set of values of \(k\) for which the line does not meet the curve.