Given:
A triangle has vertices at (-2, 1), (1, 1), and (1, -3).
We will draw the vertices to form the triangle.
The graph of the triangle will be as shown in the following picture:
As shown, it will be a right-angle triangle
The base of the triangle = 3 units
The height of the triangle = 4 units
The area of the triangle will be as follows:
[tex]Area=\frac{1}{2}*base*height=\frac{1}{2}*3*4=6[/tex]
So, the answer will be:
Area of the triangle = 6
