Can someone solve this and explain how they got the answer. PLS I NEED HELP ASAP

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

Multiplying an even number of negative numbers gives an answer that is choose from:

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base