Question

2) What is the range of the following points: {(-1,3),(0,4),(1,5),(2,6)}?

Answer 1

First we locate the points on the plane:

the points are the same on your set, so since you want their range, you have to look at the y axis

In this case, we can see that the points on the y axis go from 3 to 6, so the range should be (3,6)