Question

Identify the domain and range, and use a mapping diagram, to determine whether the relation below is a function:

{(3,7), (3,8), (3,-2), (3,4),(3,1)}

Answer 1

the domain is the set of 'x values'. (that is the set of the first numbers in each pair)#The range is the set of the second numbers in each pair.

Answer 2

So, the "y values" can be considered the range?

Answer 3

yes

Answer 4

Ok, that makes sense. I still don't know how to use a mapping diagram though