Answer: 12 unit^2 ================================== working: area of triangle = base x height
to find the base: 4 - (-2) = 4 + 2 = 6
to find the height: 5 - 1 = 4
to find the area fo the triangle: 4 x 6 x 0.5 = 12
I think you should know how I found the base but for the height, picture a perpendicular line going down to the bottom of the triangle, it will be touching (1,1). Therefore, I used 5 from (1,5) minus 1 from (1,1)
