Solving a System by Substitution
- GeoGebra Materials Team
In the sketch below, drag the RED line around by the RED points. Drag the BLUE line around by the BLUE points. Notice the equations of each of the lines. Use these equations to solve for the coordinates of point E. Use substitution to solve. Click on the check box to check you answers or to get a hint. You should repeat this until you get 5 correct.