Here's the problem- Sketch the graph of y=f(x)=x^3+x^2-12x.

Complete the table. x^2-2x-8

Include all intercepts and asymptotes on the graph.

Interval

Test point k

f(k)

sign of f

position of graph

Here's what I put.

x-int= (-4,0(3,0)

y-int= (0,0)

horizontal asymptote= I'm not sure if this is right, but i got x+3

vertical asymptote= x=4 x=-2