shading
What signs have closed circles
Greater than or equal to/Less than or equal to
-12>x-7
x<-5
What signs have open circles
Greater than/Less than
-13x<-156
x>12
What signs go up
Greater than or Great than or equal to
-3x>3
x<-1
What signs go down
Less than and Less than or equal to
a-17>-16
a-1
What is the special rules when it comes to negatives
You must flip the inequality symbol
b-7<-12
b<-5