Mathematics 0580 · IGCSE · Equations of linear graphs

Equations of linear graphs — practice question

A straight-line graph of $l$ is shown on the coordinate axes.

(a)[2]

Find the gradient of line $l$.

(b)[2]

Find the equation of line $l$ in the form $y=mx+c$.

(c)[3]

Find the equation of the line perpendicular to line $l$ that passes through the point $(12,-7)$. Give your answer in the form $y=mx+c$.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The gradient is $-\frac{3}{4}$.” …