Answer
2nd one
(2,-2) ordered pair -4 y-intercept
-4, because it is four units away from zero.
The polygon that when rotated at 180 degrees about it's center may not be carried onto itself is a quadrilateral. The reason being quadrilateral is not regular in the sense that different sides have different measures.
Your answer is 3.7!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!