How it works ?
1) Click the “New Problem” button.
2) Determine the slope of the line.
3) Enter this slope as a ratio in the white text-box provided. After doing so, click “Check Answer”.
4) If you enter a correct ratio, you’ll see a big “Correct!” sign appear. If your ratio is not correct, keep trying until you’re able to enter this slope correctly. If you need a refresher,