Post on 03-Jan-2016
description
Symbol Meaning Graph
< Less than Open circle
> Greater than Open circle
≤ Less than or equal to Closed circle
≥ Greater than or equal to
Closed circle
Let’s think ………
1,0,-1,-2,-3…
What about… ½ or 1.999999?
This is why we use an open circle when we graph the inequality
x< 2
Is 2 less than 2?
The open circle tells us that 2 is not included
Graph x > 2
Where do we put the circle ?
In which direction does the arrow go?
Think…what could you plug in for x that is greater than 2?
What about x ≤ 2 ……is 2 ≤ 2
Which way does the arrow go?
What about x ≥ 2 ……is 2 ≥ 2
Which way does the arrow go?
Where do we put the circle ?
1.Write the inequality above the number line.
2.Graph the inequality.
1) x > 82) x< 73) x ≤ 44) x ≥ -35) x < -56) x ≤ 6
Solving One- Step Inequalities