How do i do this like i'm so confused

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

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

On a architect's drawing of a house, 1 inche representa 1.5