Get premium membership and access revision papers with marking schemes, video lessons and live classes.

Processing. Please wait.

A straight line `l_1` has a gradient `-1/2` and passes through the point P (-1, -3). Another straight line `l_2` passes through the points Q(1, -3) and R(4, 5). Find:
(a) the equation of `l_1`.
(b) the gradient of `l_2`.
(c) the equation of `l_2`.
(d) the co-ordinates of the point of intersection of `l_1` and `l_2`.
(e) the equation of a line through R parallel to `l_1`.
(f) The equation of a line passing through a point S (0, 5) and perpendicular to `l_2`.