DoYourMath.com Algebrator Manual For Your Algebra Problem Solver | Page 57

Using Algebrator

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Make certain that the directrix is either a horizontal or a vertical line,
otherwise the given directrix will not form the parabola.

If you need an explanation for any particular step, click on the step and then
click on the "Explain" button.
2.2.2.5.2.4 Equation of a parabola using its vertex and a point

This wizard is used to find the equation of a parabola, given its vertex and a
point on the parabola.

It can be accessed by clicking on Wizard Button | Parabola | Equation of a
parabola using its vertex and a point.

To find the equation of a parabola:
Enter the vertex point: (x1 , y1 ).
Enter any additional point: (x2 , y2 ).
If you click on "Solve step" or "Solve all", a dialog box will appear; you
should select if you want the parabola to be horizontal or vertical.
Click on the "Solve Step" button to see the next step or "Solve all" button
to see all steps.

If you need an explanation for any particular step, click on the step and then
click on the "Explain" button.
2.2.2.5.2.5 Equation of a parabola passing through 3 points

This wizard is used to find the equation of a parabola, given three known points
on the parabola.

It can be accessed by clicking on Wizard Button | Parabola | Equation of a
parabola passing through 3 points.

To find the equation of a parabola:

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