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WebGraphing.com Forum » List all forums » » Forum: Precalculus and Trigonometry Homework Help » » » Thread: Needs Help » » » » Post: Re: Needs Help |
| Posted by pskinner at Mar 27, 2007 9:13:18 PM |
Re: Needs HelpFor your first question, you can use our inequality graphing calculator in one variable to get a graph and a way to solve the inequality. For question 2, if you compute the distance between the 3 pairs of points, you can use Pythagoras Theorem to decide if it is a right triangle. For question 3, you need to complete the square for both x and y and put it into the standard form for the equation of a circle. Alternatively, if you plot the equation using the equation graphing calculator, you will see if you get a circle and you can read the center and radius. ---------------------------------------- Principal Skinner |