Volume of pyramid whose triangular base

Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

Combine like terms to make a simpler expression 3z+z