Which function has an inverse that is also a function?

Flashback to semester a. are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr? show your work.

Which best explains why this triangle is or is not a right triangle?

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)