Question

Determine whether the relation is a function identify the domain and the range (1,3) (5,15) (7,21)

Answer 1

Yes it's a function, Domain is all real numbers

Explanation:

This is a function because y varies directly with x by a factor of 3. We can make the equation y=3x to represent this. The domain is all real numbers since any real number plugged in gets a real number output