Question

Help? How do I solve this?

Answer 1

Because the two polygons are identical, we can set 2y+6 and 5y-3 equal to each other and solve for y.
2y+6=5y-3
Move all Y's on one side and everything else on another...
2y+6=5y-3
-2y -2y

6=3y-3
+3 +3

9=3y
/3 /3

3=y

We can also set 10 and x+1 equal to each other.

10=x+1
-1 -1

9=x

So...

y=3 and x=9

I assume that the line in the middle represents the Y axis, so I would say that the transformation is a reflection over the Y axis.