Question 401178
You didn't post the question. We're not mind readers.
I'm thinking you need to come up with an equation in slope intercept form for a line that has a slope m=-1 and a y intercept of b=-4 (that's my best guess on what you need?????)
y=mx+b  plug in your values
y=-1x-4
y=-x-4 this is would be the equation