Question

find the tangent to the curve y=4-x^2 at the given point (-1,3)

Answer 1

y'=-2x;
k=2;
y=2(x-(-1))+3=2x+5

Answer 2

thanks man

Answer 3

I went about solving this and I don't think the graph has a tangent at the point (-1,3). Prove me wrong if you can.

http://www.wolframalpha.com/input/?i=y%3D4-x^2