Question

Determine which of the following terms is a function:
a.

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

c.

(1,2) (2,4) (2,6)
b.

(1,2) (2,3) (1,5)

d.

(1,2) (3,5) (3,7)

Answer 1

to be a function the x value have to be different, if two points have the same x value is already not a function

Answer 2

so which one you think it is

Answer 3

It is somewhat like a mental vertical line test. Which does indeed mean that they cannot share the same x coordinates.
So from that, is there one answer with a set of three distinct x values?

Answer 4

A is the answer

Answer 5

correct