To determine if it is a function or not, you can not have a vertical line drawn down the graph touch 2 of the graphed points. That means that you can not have 2 points with the same x value and different Y value. The first set of points satisfies this and is your answer. Hope that helps.
1. c is 4 times as many as 5 = 20 2. 27 is c times as many as 3 = 9 3. 6 times as many as c is 72 = 12 4. 8 more than c is 15 = 7 Pls give me the brainliest if these are right. Hope this helps
