Math

x < (greater than or equal to) -2

(- inf, -2] < seems like negatives have negative infinity, then number then bracket, cause closed circle?

x > (greater than or equal to) 6

[6 , inf)

x > (greater than or equal to) 3

[3, inf)

x > 3

(3, inf) < seems normal (open circle)

x < -3

(- inf , 3) < again, neg inf but WITHOUT closed circle

x < 1

( inf, 1)

REMEMBER, IF YOU ARE DIVIDING BY A NEGATIVE, THE INEQUALITY CHANGES! I THINK IT WOULD CHANGE TO THE OTHER WAY!

x > -9

(-9, inf)

x > (greater than or equal to) 4

[4. inf)

x < (greater than or equal to) -2

(- inf, -2]

Closed circle = brackets
Also there seems to be a pattern, which ever direction seems to be where infinity is.