Question

r=(1,2),(2,5),(3,4),(1,3) what is the domain and range

Answer 1

the domain is the collection of x values which are 1,2,3
the range is the collection of y values which are 2, 3, 4, 5

Answer 2

is this a function

Answer 3

s=(-2,4),(-1,1),(0,0),(1,1),(2,4) what is the domain and range? and is that a function?

Answer 4

it's not a function because one x has more than one y value, it's only a function if one x only has one y value.

Answer 5

the last post was regarding to your original problem.

Answer 6

your new problem is a function. domain is -2,-1,0,1,2; range is 0,1,4.