In need of assist, been on this question for a while now and don't know what to do, if someone can tell me the answer, i will appreciate it.

How to determine whether two known pairs of points are on the same line.

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

Aweekly newspaper charges $72 for each inch in length and one column width. what is the cost of an ad that runs 2 column inches long and 2 columns wide? its not 288