Question

Which point could be removed in order to make the relation a function?

{ (-4,3),(-5,6),(1,0),(-4,5),(9,5),(0,-7)}

A. (1,0)
B.(-4,5)
C.(-5,6)
D.(9,5)

Answer 1

B. (-4,5)

Explanation:

a function cannot have any repeating x values....it can have repeating y values, just not the x values

so..going by ur answer choices, u can remove (-4,5) and it would be a function. The reason is because u have two sets of points with the same x value...so it is not a function unless u take out either (-4,5) or (-4,3)...because they both have the same x value.