Question

Which inequality has an open circle when it is graphed on a number line?

O
3/5
07/2x
O x≤12
O x2-6

Answer 1

07/2x

Explanation:

7/x2 is invalid when x is is 0

Answer 2

07/2x

Explanation:

7/2x is invalid when x=0

when x=0:

7/2x=

7/2(0)=7/0 which has no solution at x=0

Hence, there is an open circle at x=0