Read and Write Inequalities

Read and Write Inequalities

I can...

• Write an inequality to model a verbal sentence.

• Write and solve an inequality to represent a word problem.

Standards

• 6.AF.6

  Write an inequality of the form x > c, x ≥ c, x < c, or x ≤ c, where c is a rational number, to represent a constraint or condition in a real-world or other mathematical problem. Recognize inequalities have infinitely many solutions and represent solutions on a number line diagram.

Multiple Choice

Which letter shows the correct coordinate for

 $-\frac{1}{2}$  ?

• A

• B

• C

• D

Inequality Symbols

• < is less than, is fewer than, is below

•  $\le$  is less than or equal to, at most, maximum, no more than, no greater than, up to

•  $>$  is greater than, is more than, is above

•  $\ge$  greater than or above, at least, minimum, no less than, no fewer than, down to

Stratus clouds form at elevations up to 6500 ft above ground. Write an inequality that represents the height h of a stratus cloud.

Open Ended

Stratus clouds form at elevations up to 6500 ft above ground. Write an inequality that represents the height h of a stratus cloud.

Open Ended

Write an inequality to model the verbal sentence:

8 is less than a number.

Open Ended

Translate the inequality into a verbal sentence

 $\frac{w}{5}\le18$  

Multiple Choice

Write an inequality to model the verbal sentence:

A number increased by 4 is at most 20.

• $x+4\ \ge20$

• $4x\le20$

• $x+4\le20$

• $4x\ge20$

Multiple Choice

Mr. McCrory's son, Israel, wants to grow taller than his dad. He si currently 5'9" tall. His dad is 5'10.5" tall. Which inequality represents how much Israel will have to grow g to be taller than his dad. 

•  $1.5"\ <g$  

•  $g\ge1.5"$  

•  $g\ \le1.5"$  

•  $1.5"\ >g$  

Poll

How are you feeling about writing inequalities?

• No problem!

• I'm pretty sure I got his.

• I think I know what a greater than sign is.

• What are these triangle thingys?