Find an equation of the tangent line to the curve at each given point.

Question

x = t^2 − 4, y = t^2 − 2t

at (0, 0) =
at (−3, −1) =
at (−3, 3) =

Answer 1

dy/dx = (2t-2)/(2t) = 1 - 1/t
at (0,0) t=2, so dy/dx = 1 - 1/2 = 1/2
Do the other two points in like wise