Write a brief summary or outline of the three (3) most important mathematical concepts worked on during the week and post it on this forum. Remember to include the topic of the line graph and how it is drawn on the Cartesian plane. Include a graphic example. Your response should be substantial and logically summarize or outline the topic. Post your initial contribution before midnight on Wednesday. Read your classmates' contributions and select one (1) of them to start a dialogue with. Explain why you differ or agree with their opinions. Post all your contributions and responses before midnight on Sunday.