What is the area of quadrilateral WXYZ if it has vertices with (x,y) coordinates W(2,4) X(5,4) Y(4,1) Z(1,1)?

Here's a pic......

The area of this quadrilateral is just B x H = (3 x 3) = 9 sq units.......

This quadrilateral is a parallelogram and two of the sides are parallel to the x axis.

That is why it was so easy for CPhill to determine the area :)