Friday
April 18, 2014

Homework Help: algebra

Posted by lee on Tuesday, April 2, 2013 at 11:31am.

Can anyone help explain how to work this problem out?
One factor in flood safety along a levee is the area that will absorb water should the levee break. the coordinates that make up the boundry area are (0,0),(2.8,2.1)and(4.3,4.4) what is the area of the land that would absorb the water?

I believe its
a=]x1,y1,1_x2,y2,1_x3,y3,1]
=0,0,1_2.8,2.1,1_4.3,4.4,1]
area=1/2[det a]
then Im stuck

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