Question

could really use a hand please:
f(x) = x^3 + x^2 +9x -9

find a point on this graph, that the tangent line drawn at that point passes through the point (4,-1)

Answer 1

(4,-1)

Answer 2

general the equation of the tangent lines to this graph

Answer 3

and ssee which tangent line passes thru point (4,-1)

Answer 4

@dan815 yeah... i know the eqn would be y = mx +c...?
how would i fiind my x y coordinate on the graph?

Answer 5

oh no thats wrong umm wait

Answer 6

ohh i know u cud do this working backwards

Answer 7

ok... how backwards...?