# What is the equation of the line tangent to # f(x)=(-3x-1)(x+4) # at # x=-1 #?

##### 1 Answer

Dec 6, 2015

#### Explanation:

Find

To find this point, find

The point where the tangent line will intersect is

Now, find the slope of the tangent line:

Therefore

Write in point-slope form:

In slope-intercept form: