Writing/Graphing Inequalities

Writing/Graphing Inequalities

Students will use inequalities to graph them on the number line.

Writing Inequalities

Watch the video to learn about the symbols for inequalities

 $<$  Less than

 $>$  Greater than
 $\le$  Less than OR equal to
 $\ge$  Greater than OR equal to

Multiple Choice

What does the inequality say?

 $x\ge14$ 

• a number greater than or equal to 14

• a number greater than 14

• a number less than or equal to 14

• a number less than 14

Multiple Choice

How would I write "a number less than OR equal to 2"

• 
  

  $x<2$
  

• $x>2$

• $x\le2$

• $x\ge2$

Multiple Choice

Write the inequality for the word problem below:
A child needs to be at least 8 years old to enter the museum.

•  $c<8$  

•  $c>8$  

•  $c\le8$  

•  $c\ge8$  

Multiple Choice

 Write the inequality for the word problem below:

The temperature today is less than yesterday's low temperature of  $13\degree$ .

•  $t<13$  

•  $t>13$  

•  $t\le13$  

•  $t\ge13$  

Graphing Inequalities

Watch the video to learn about which circle you will use on the number line.

You will use a closed (shaded) circle on the number line for  $\le or\ge$  
You will use a open (unshaded) circle on the number line for  $<or>$  

Multiple Choice

Would I use a closed circle or an open circle on the number line for  $x\ge7$ ?

• Closed (shaded) circle

• Open (unshaded) circle

Multiple Choice

 Would I use a closed circle or an open circle on the number line for  $x<6$ ?

• Closed (shaded) circle

• Open (unshaded) circle

Multiple Select

If I had a closed (shaded) circle on a number line...which inequalities could it be graphing?

*Choose 2 answers*

• $x>7$

• $x\le7$

• $x<7$

• $x\ge7$

Multiple Select

If I had an open (unshaded) circle on a number line...which inequalities could it be graphing?

*Choose 2 answers*

• $x<9$

• $x\le9$

• $x>9$

• $x\ge9$

Graphing Inequalities

 Watch the video to learn which direction your arrow should point on the nuber line.

You will use a -----> arrow to graph inequalities that use  $>or\ge$ 

You will use a <----- arrow to graph inequalities that use  $<or\le$  

Multiple Choice

 Use what you know about the direction of the arrow...which direction will the arrow point for  $x\le5$ ?

Multiple Choice

 Use what you know about the direction of the arrow...which direction will the arrow point for $x\ >10$ ? 

Multiple Select

If the arrow is pointing as shown, which inequalities could it be graphing?

*Choose 2 answers*

• $x<8$

• $x\le8$

• $x>8$

• $x\ge8$

Multiple Select

If the arrow is pointing as shown, which inequalities could it be graphing?

*Choose 2 answers*

• $x<4$
  

• $x\le4$

• $x>4$

• $x\ge4$