Which ordered pairs need to be removed to make the graph a function?

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent