Answer:
-2
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given: E, F, G, H denote the three coordinates of the area fenced
To find: coordinates of point H
Solution:
According to distance formula,
length of side joining points
is equal to 
So,

Perimeter of a figure is the length of its outline.

Put 

This is true.
So, the point
satisfies the equation 
So, point H is
.
I think (-6,-2) because it would switch into the all negative quadrant making them both negative.
5. -6a-48
6. 36x+4
7. 30n+40
8. 1.8m+2
Yess