Week 9 Math Post

This week we reviewed how to graph inequalities on a number line. For example, if you had the equation x > 2 this is how you’d display it properly.

1. Take the number(s) in the equation and find them on the number line. In this case the number is 2.

2. Look at the symbol(s). In the equation, it states that x is larger than 2, using the > sign.

3. Draw either a filled-in circle or a hollow circle on the number. The filled-in circle means that x is greater than or equal to/ less than or equal to the number. The hollow circle means that x is either greater or less than the number. In the example equation, x is greater than 2 so you would put a hollow circle around the 2.

4. Draw an arrow stating if x is greater than or less than the number. In the equation we know x is greater than 2 so you would need to draw an arrow pointing to the right of, and along all the numbers greater than 2.

The end result should look like the picture above.

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