Question

How do you graph `y=-\frac{1}{5}x-11`?

Answer 1

First of all you may recognize this as the equation of a straight line so that you'll need only 2 points to draw your graph;
The first one can be found by putting `x=0` in your equation giving you the point of coordinates `(0;-11)`
The second point can be found putting `x=-5`, giving the point of coordinates `(-5;-10)`.
Graphically:
graph{-1/5x-11 [-18.335, 1.665, -13.16, -3.16]}