Answer:
A square 
36 square yard. 
Step-by-step explanation:
Given the following information: 
W(3,3), X(-3,3), Y(-3,-3), and Z(3,-3) 
So we need to graph those vertices and connect them in order.
(please have a look at the attached photo) 
From the graph, it clear that the shape of the garden is a square.  
Then, we need to calculate the length of the four sides 
<u>Find the length of the side YZ.
</u>
The length of side YZ  =  3 + 3  =  6 yards  because point Y and Z are on the same line y = -3 so we just need to find the distance between their x coordinate 
<u>Find the length of the side WZ.</u>
The length of side WZ  =  3 + 3  =  6 yards because point W and Z are on the same line x = 3 so we just need to find the distance between their y coordinate 
=> the area of the square WXYZ: 
= YZ*WZ
= 6*6 
= 36 square yard.