Question

If F={(2, -4),(2,7)(3,5),(4,-1),(8,7)}

is it a function, explain pweasee:)

Answer 1

can you tell me what are the x coordinates?

Answer 2

this is all it gives me

Answer 3

its a true or false question, but id like to know how to tell for future ref.

Answer 4

no..i was actually asking you to identify the x coordinates lol

Answer 5

it's the first number in an ordered pair

example in (a,b) a is the x coordinate

Answer 6

You can tell its a function if every x value has 1 y value

Answer 7

so if they dont have different y values it is not a function