Posted by Skye on Monday, February 14, 2011 at 2:05am.
a(2,4) b (4,6) c (4,4)
find the equation for the altitude from each vertex of triangle abc.

Geometry altitude  Reiny, Monday, February 14, 2011 at 8:28am
I will do one of them: from A to BC
slope of BC = 10/8 = 5/4
so slope of altitude = 4/5
point on it is (2,4)
y4 = (4/5)(x+2)
5y 20 = 4x  8
4x + 5y = 12 or y = (4/5)x + 12/5
do the others the same way