SOLUTION: i have 3 points on a graph that form a triangle and i need to find the area of the triangle using a matrix. How would i find the area? the points are (-2,-2), (3,0), and (2,4).

Algebra ->  Matrices-and-determiminant -> SOLUTION: i have 3 points on a graph that form a triangle and i need to find the area of the triangle using a matrix. How would i find the area? the points are (-2,-2), (3,0), and (2,4).      Log On


   

Question 20235: i have 3 points on a graph that form a triangle and i need to find the area of the triangle using a matrix. How would i find the area? the points are (-2,-2), (3,0), and (2,4).
Answer by khwang(438) About Me  (Show Source):
You can put this solution on YOUR website!
(-2,-2), (3,0), and (2,4).

computeteh abs.valof the determinant
|1 -2 -2|
|1 3 0| * 1/2
|1 2 4}

Kenny