First, find the distances of the lines. Take alike terms away.
(-6, (3)) and (-1, (3)
6+1= 7
Length for the triangle is 7 units.
(-1,(3)) ((-3),5)
5+1 = 6
Height is 6.
Use formula 1/2 bh, which can be changed to bh/2
7 x 6/2
42/2
21.
The area is 21 units.
