Tomorrow my semester ends and i need to finish this

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)