The line y=mx−2y = mx - 2y=mx−2 is a tangent to the circle with equation x2+6x+y2−8y+5=0x^2 + 6x + y^2 - 8y + 5 = 0x2+6x+y2−8y+5=0
Find the two possible values of mmm, giving your answers in exact form.
8 exam-style questions on OCR A Level Maths 1.2.4 Quadratic functions. Each one has a worked solution and a mark scheme showing where the marks go.