(a(i))[1]
Find the gradient for line A.
(a(ii))[1]
Find the gradient for line B.
(b)[2]
Write down the co-ordinates of the point where line A meets the x-axis.
(c)[4]
Find the equation of the line perpendicular to line A that goes through the point $(10, 9)$. Give your answer in the form $y = mx + c$.
(d)[3]
Work out the co-ordinates of the point where line A and line B intersect.
(e)[3]
Work out the area enclosed by line A, line B and the y-axis.