SOLUTION: Find the area of the triangle whose sides lie on the graphs of 3x + y + 1 = 0, x + 4y -7 = 0, and -5x + 2y + 13 = 0

Question 1033914: Find the area of the triangle whose sides lie on the graphs of 3x + y + 1 = 0, x + 4y -7 = 0, and -5x + 2y + 13 = 0
Answer by ikleyn(52813) (Show Source): You can put this solution on YOUR website!
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Find the area of the triangle whose sides lie on the graphs of
3x + y + 1 = 0,
x + 4y -7 = 0, and
-5x + 2y + 13 = 0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Plot 3x + y + 1 = 0, x + 4y -7 = 0, and -5x + 2y + 13 = 0

Solve the system, find the coordinate of vertices, find the side dimensions and apply the Heron's formula.

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