find the domain and range, is the relation a function

Question

?(a) Find the domain and range of the relation. ?(b) Determine whether the relation is a function.
?{(7?,85?), ?(5?,45?), ?(7?,35?), ?(3?,75?)}

Answer 1

Jessica, the domain is you x values and the range is your y values. In order to be a function, each x value must have only one corresponding y value.

 

For example, (6,46), (8, 46), (6,32) has a domain of 6 and 8 and a range of 32 and 46. It is not a function because 6 has two y values, 42 and 36.

 

Hope this helps!