Show that (9, 8) is on the graph of f(x) = 2srt(x) + 2.

Question

Find the equation of the tangent line to the graph at this point.

How do I do this? I did it, but my homework counted my answer wrong.

Answer 1

y = 2sqrx + 2 plug in y=8, x=9

8 = 2sqr9 +2= 2(3) = 6+2 = 8