(i)[4]
Determine the values of $k$ and $b$.
(ii)[1]
Determine the coordinates of the mid-point of $AB$.
Mathematics 9709 · AS & A Level · Coordinate geometry
Coordinate geometry — practice question
The line $4x + ky = 20$ goes through the points $A(8, -4)$ and $B(b, 2b)$, with $k$ and $b$ as constants.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Put point $(8,-4)$ into the first line equation to find $k$” …
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