Mathematics 9709 · AS & A Level · Coordinate geometry

Coordinate geometry — practice question

Points A and B have coordinates $(-7, 3)$ and $(5, 11)$, respectively.

(a)[4]

Show that the perpendicular bisector of $AB$ can be written as $3x + 2y = 11$.

(b)[5]

Find an equation of the circle that passes through $A$ and $B$ and has its centre on the line $12x - 5y = 70$.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Midpoint $(-1,7)$.” …