Question

Explain why there does not exist a function whose domain is {-1, 0, 3} and whose range is {3, 4, 7, 9}.

Answer 1

range is the results of domain; so if there are more range than domain, it means that there is at least one domain element that produces 2 range elements; and that breaks the definition for a function

Answer 2

If domain is: {turn}
then the range is {left} OR {right}
the range cannot be: {left and right} ...

Answer 3

I thought so.. just wanted to make sure :) Thank you

Answer 4

youre welcome ☺