Question

Which of the following relations is a function?

{ (1, 2), (1, 3), (1, 4), (1, 5) }

{ (1, 3), (2, 3), (4, 3), (9, 3) }

{ (5, 4), (-6, 5), (4, 5), (4, 0) }

{ (6, -1), (1, 4), (2, 3), (6, 1) }

Answer 1

a function WILL NOT have 2 or more x values that are the same. They can have more then 1 y value the same, just not the x's. So look at your answer choices and see which one does not have repeating x terms...that will be your function.

Answer 2

For instance, look at your first answer choice...
your points are set up like (x,y).....and as you can see, all of the sets of numbers have an x value of 1.....repeating x values....NOT A FUNCTION.

Answer 3

dont be rude

Answer 4

hello ???????????

Answer 5

@ale87

Answer 6

hello @bubbleslove1234

Answer 7

do you need help?