Can Someone Help Me Please?

Which of the following is true about functions?

In a function, every input has only one output.

For a relation to be a function, there can be no repeating y-values

In a function, the domain values can repeat

In a function, the graph will always look like a circle

Question

Can Someone Help Me Please? 

Which of the following is true about functions?
		
In a function, every input has only one output.
		
For a relation to be a function, there can be no repeating y-values
		
In a function, the domain values can repeat
		
In a function, the graph will always look like a circle

anonymous · Answer

Every input has just one output.