Two circles have centres (2,−1)(2,-1)(2,−1) and (8,k)(8,k)(8,k) and radii 5 and 3 respectively.
Given that the circles touch externally, find the possible values of kkk.
[5]
Markscheme
1.3.4 Coordinate geometry in the (x, y) plane Questions
8 exam-style questions on WJEC A Level Maths 1.3.4 Coordinate geometry in the (x, y) plane. Each one has a worked solution and a mark scheme showing where the marks go.