Can someone please help me and explain how to do it .i greatly appreciate it. I have a lot problems but need This For for example . Thank you

1)Is this a function or not?
2)What is the domain and range?

(2,3),(-1,-3),(4,7),(0,-1),(-3,-7),(1,0)

2 answers

given a set of pairs of values (x,y),
domain: the set of x values
range: the set of y values
it is a function if each x-value corresponds to a single y-value.
That's the definition but i need help explaining how to do .