Determine which relations represent functions. if the relation is not a function, state
why not
- -

The distance between these two is 5/21.

In order to find the distance between two points on a number line, subtract one from the other. In this case, we'll need to give them common denominators.

-2/3 - -3/7

-14/21 + 9/21

-5/21

Because our answer is negative, we take the absolute value. Distance is usually expressed as a positive.

5/21