C4- Co-ordinate Geometry

Question 1

How do you get the Cartesian equation from the parametric form?

Answer 1

Rearrange x to get t as the subject, and sub into y

If trig functions, rearrange to get cos and sin as the subject, then sub into cos^2 + sin^2 =1

Question 2

How do you find the area underneath a curve given parametrically?

Answer 2

∫y(dx/dt) dt

Question 3

What is x expressed as in parametric form?

Answer 3

x=f(t) where t is a parameter

Question 4

What is y expressed as in parametric form?

Answer 4

y=g(t) where t is a parameter