31/2x +4 1/3=7 2/9 does anyone know how to do

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

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

What does the sign of the slope tell you about a line?