Mathematics 9709 · AS & A Level · Coordinate geometry

Coordinate geometry — practice question

The diagram is of a rectangle $ABCD$ with point $A$ at $(0, 8)$ and point $B$ at $(4, 0)$. The diagonal $AC$ is given by $8y + x = 64$. Calculate the coordinates of $C$ and $D$.
(main)[7]

Find the coordinates of points $C$ and $D$.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The gradient of $AB$ is $-2$.” …

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