Question

Which of the following relations is a function?
A. (3, 0), (-5, 3), (5, 1), (-5, 5)

B. (3, 4), (-5, 2), (5, 1), (-7, 2)

C. (3, 4), (-5, 6), (3, 3), (-7, 2)

D. (5, 1), (-5, 4), (3, 1), (5, 2)

Answer 1

in order to relations be a function x's shouldn't repeat

Answer 2

in order pair first value is x and 2nd one is y
(x,y) so just look at the x and see if u have same x values more than once then relation is not a function

Answer 3

did you understand ??

Answer 4

@TreyYoung , do you understand what @Nnesha told you?

Answer 5

also if you plot the points on a coordinate plane, it has to pass the vertical line test