(a)[2]
Calculate the distance of $PQ$.
(b)[3]
Show that the equation for line $L$ is $3y + x = 1$.
(c)[3]
Line $M$ is perpendicular to line $L$ and goes through point $P$. Find the equation of line $M$. Write your answer in the form $y = mx + c$.
Mathematics 4024 · O Level · Perpendicular lines
Perpendicular lines — practice question
On the grid, the points $P$ and $Q$ together with line $L$ are displayed.