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Question 58

The line y=mx+4y = mx + 4y=mx+4 is a tangent to the circle (x−6)2+(y+2)2=20(x - 6)^2 + (y + 2)^2 = 20(x−6)2+(y+2)2=20.

Find the two possible values of mmm, giving your answers in exact form.

[7]
Markscheme

Circles Questions

  1. A Level
  2. /Maths
  3. /Circles

292 exam-style questions on Edexcel A Level Maths Circles, covering 6.1 Midpoints and Perpendicular Bisectors, 6.2 Equation of a Circle, 6.3 Intersections of Straight Lines and Circles, 6.4 Use Tangent and Chord Properties, and 6.5 Circles and Triangles. Each one has a worked solution and a mark scheme showing where the marks go.

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