Question

need help with this Is the relation {(3, 5), (–4, 5), (–5, 0), (1, 1), (4, 0)} a function? Explain. Type your answer below.
is this right it is a function because all x values are different

Answer 1

yes, this function is a function because each x value has different corrosponding y values. So if the same x value has more than one corresponding y values, then it is not a function.

For example, (2,0), (1,5) , (2,8) is not a function because the same x value (2) has two different y value, 0 and 8.