This is my first question can anyone help me please

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

The system of equations graphed below has how many solutions? y = 2x + 2

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.