<span>This tells us two things. Our slope is 3 and our y intercept is -4. This tells us that we need to start at (0,-4). Plot that point. Since our slope is 3 (3/1), move up 3 and right 1.
This you will end up at point (1,-1). Connect these two points in a straight line, and you have graphed your line. It will look like this</span>