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These are linear inequalities that only leave interior of rectangle as white space. They are:
. . . . .[math]y\, <\, 5x[/math]
. . . . .[math]y\, >\, 5x\, +\, 2[/math]
. . . . .[math]x\, >\, -5y[/math]
. . . . .[math]x\, <\, -5y\, -\, 2[/math]
No vertical or horizontal lines were allowed to make this.
I need to be able to show algebraically or numerically that the rectangle has perpendicular sides. Essentially proving that the sides are perpendicular. How would I go about doing this?
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