LINEAR INEQUALITIESLINEAR INEQUALITIES
KeypointsKeypoints NotesNotes
SummarySummary
NUMBER LINE FORM OF INEQUALITIES
To easily visualize the intersection of
inequalities on a number line.NOTES (^) focus on the blue dot
: smallest part goes
to right (means in the
number line the arrow will
heading to the right)
< : smallest part goes
to left (means in the number
line the arrow will heading to
the left)
,< VS ≥ ,
on the number line
blank dot for
and <
full dot for
(^) ≥ and (^) ≤
≤
open interval use
parantheses
closed interval use
brackets
Number line form
Remember these!
blank dot or full dot (based on the inequality symbol)
the arrow heading to? (look at the smallest part of symbol)
the intersection is the solution