Answer is below attached
Step by step. We know y = -3x -5
The first point on the graph is -5 on the y axis. It is your y intercept.
The second point is your slope, which is the number next to the x, stated as y/x, -3/1.
You will graph this from the y-intercept as shown in red.
Then you can connect the points, shown with the blue line.