I'm trying to study, so when I get this type of work I'll know how to do it. Thank You!

Question

The coordinates of the vertices of a triangle are (-1,-1), (3,-1), and (3,4). What is the area of the triangle?

Answer 1

The first thing to do is plot the points on a coordinate plane then draw the triangle. You will see that you have a right triangle. You should be able to count the lengths of the two legs directly on the coordinate plane. The area is:

Area = (1/2)·Base·Height

You can use either leg as the base and the other as the height.