November 27, 2015

Homework Help: Analytic geometry - finding point by intersect lin

Posted by Knights on Tuesday, March 5, 2013 at 9:38am.

I have a triangle ABC. The slope of AB is -1/ab, the slope of AC is -1/ac, and the slope of BC is -1/ac. My question is, I have 3 lines: Altitude from A to BC, altitude from B to AC, and altitude from C to AB. I know their slope because it is just -1/slope. But I want to know the coordinates of where they intersect. Could someone help me? thanks

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