Answer:
The answer to this is: C

Step-by-step explanation:
Using the formula:

and inserting what we are given:
m = - 4
(m is the symbol which represents slope)
(-1, 6)
This point coordinate represents our:


When inserted into our formula (point slope form formula)
It will look like this:

Then solve it from there!
(There is a double negative, which will make it positive)
Giving you:
