(a(i))[3]
Find the equation of the straight line through $A$ and $B$. Give your answer in the form $y=mx+c$.
(a(ii))[2]
Show that $a^2=16$ and $b^2=4$.
(b(i))[3]
Find the value of $k$.
(b(ii))[3]
Calculate angle $POQ$.
(c(i))[1]
Find the area enclosed by the curve $\dfrac{x^2}{16}+\dfrac{y^2}{4}=1$. Give your answer as a multiple of $\pi$.
(c(ii))[2]
Work out the area enclosed by this curve, giving your answer as a multiple of $\pi$.