Question

What are the domain and range of each relation? Is the relation a function?
E={(40,10),(-18,27),(38,10),(57,-15)}

Answer 1

for it to be a function each x value must point to one and only one y value. I believe that it is a function.

the domain is the x values: (40,-18,38,57)
the range is the y values that the range points to: (10,27,-15). // I don't think that you need to write 10 twice.

Answer 2

Thank you so much for helping me

Answer 3

your welcome.