Ok so the line should start at y=3, given that’s where the intercept is. Then go up one, and over 7, aka to (7,4) since the slope is up one, over 7. The next dot will be at (14,5). So draw your dots at 0,3; 7,4; and 14,5; then connect them with a straight line! I would draw it out for you, but I don’t currently have graph paper, so hopefully this explanation was detailed enough!