Question

The domain and range of the following relation: R: {(5, -3), (1, 9), (-5, -4), (-8, 9)} is

Domain: {-4, -3, 9}, Range: {-8, -5, 1, 5}

Domain: {-8, -5, 1, 5}, Range: {-4, -3, 9}

Domain: {(5, -3), (1, 9), (-5, -4), (-8, 9)}, Range: Does not exist

Domain: Does not exist, Range: {(5, -3), (1, 9), (-5, -4), (-8, 9)}

Answer 1

Domains are the x. ranges are the y

Answer 2

B?

Answer 3

Looks right to me.

Answer 4

To add on a little bit to what sir rico said, domain and range are just fancy ways to say x and y. Even in more advance mathematics, it isn't really that important to know, even though math books will often use the terms "x" and "domain" interchangeably. The way I remember it is that "domain" has the word "In" at the end, and you tend to "plug in" the values of "x" into the equation when you have a function.