Straight linesAQA A-Level Maths: Mind map

Exam questions on Straight lines

1. The line $l_1$ passes through $A(1,2)$ and $B(5,12)$.
   Find the coordinates of the point where $l_1$ crosses the $y$-axis.2 marks
2. The line $m$ has equation $3x+4y-12=0$.
   Find the equation of the line parallel to $m$ that passes through the point $(8,-1)$. Give your answer in the form $ax+by+c=0$, where $a$, $b$ and $c$ are integers.2 marks
3. The points $A(2,1)$ and $B(6,3)$ are given.
   Find an equation of the perpendicular bisector of $AB$, giving your answer in the form $ax+by+c=0$ where $a$, $b$ and $c$ are integers.3 marks