Question

Identify the domain and range of the given relation, Tell whether or not the relation is a function:
(0, 3) (1, 1) (2, 2) (3, 4) (4, 2)

Answer 1

Suggestion: Plot the point and do vertical line test
Hint: You can have different inputs going to the same output, however, you cannot have the same input going to different outputs

Answer 2

http://www.wolframalpha.com/input/?i=curve+fit+%280%2C+3%29+%281%2C+1%29+%282%2C+2%29+%283%2C+4%29+%284%2C+2%29