Equation of a straight lineEdexcel International A Level Maths: Mind map

Exam questions on Equation of a straight line

1. A line $l$ passes through the points $A(2,5)$ and $B(6,13)$.
   Find the coordinates of the point where $l$ meets the $x$-axis.2 marks
2. The line $m$ has equation $3x-4y+8=0$.
   Find the $x$-coordinate of the point on $m$ where $y=7$.2 marks
3. A line $l_1$ passes through the points $P(-3,4)$ and $Q(5,-2)$.
   Find an equation of the line $l_1$, giving your answer in the form $ax+by+c=0$, where $a$, $b$ and $c$ are integers.3 marks