Thread: sparametric equations

Hi:
I have done part a for this parametric equation question. Before I continue to part b could somebody please check I have succeeded with part a.
thank you

You have done part (a) correctly. For part (b), you are given that the slope of the normal to the curve is -1/2, which means that the slope of the tangent (which is equal to the value of the derivative) at that point is 2.

Therefore, solve for t:

here it is. Seems a little long winded. Have I done correct and is this the best way?
thanks