This wizard is used whenever you need to find the unknown coordinate of one or more points lying on a given line.
It can be accessed by clicking on Wizard Button | Line | Evaluate a linear equation.
In order to find the unknown coordinate of one or more points lying on a given line:
- Enter one of the coordinates, x1 or y1.
- If you wish to enter another point's coordinate, click on "Add a new point" button. You can repeat this process as many times as necessary.
- Type the equation of the given line in the space provided (highlighted line).
- Click on the "Solve Step" button to see the next step or "Solve all" button to see all steps.
- After finding all the unknown coordinates, you can click "Graph" or "Graph all" buttons to see the graphical representation of the solution (i.e. the graph of the line plus all the points lying on the line).
You can also enter both coordinates of a point. In that case, no calculation will be shown but the point will be graphed. Note that you will be able to tell from the graph if such point lies on the line or does not.
If you need an explanation for any particular step, click on the step and then click on the "Explain" button.