What is the length of ef in the right triangle below

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

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.