Pre-Algebra Lesson 8-6 Inequalities

Pre-Algebra

Lesson 8-6

Inequalities

p. 361

Let's warm-up!!!

Multiple Choice

Which inequality represents the situation?

Amelia sold more than 40 magazines.

• $m<40$

• $m\ge40$

• $m>40$

• $m\le40$

Multiple Choice

Which inequality represents the situation?

Gino sent less than 35 texts yesterday.

•  $t<35$ 

•  $t\ge35$ 

•  $t>35$ 

•  $t\le35$ 

Multiple Choice

Which inequality represents the situation?

Your height is greater than or equal to 52 inches.

•  $h<52$ 

•  $h\ge52$ 

•  $h>52$ 

•  $h\le52$ 

Multiple Choice

Which inequality represents the situation?

Your speed is less than or equal to 62 mph.

•  $s<62$ 

•  $s\ge62$ 

•  $s>62$ 

•  $s\le62$ 

Common verbal phrases and corresponding inequality symbols

You must be at least 18 years old to vote.

Write an inequality to describe this situation.

• Let a = your age.

• The phrases at least means which inequality symbol?

Poll

You must be at least 18 years old to vote.

• $a\ge18$

• $a>18$

Multiple Choice

A student must have at least 10 hours of instructor-assisted driving time to pass the course.

Which inequality describes this situation?

•  $h>10$  

•  $h<10$  

•  $h\le10$  

•  $h\ge10$  

For the given value, state whether the inequality is true or false.

 $2t+8>7$  when  $t=-1$  

• Write the inequality.

• Replace t with -1.

• Simplify.

• Have your answer ready for the next slide.

Poll

Is the sentence  $2t+8>7$  true or false?

• TRUE

• FALSE

For the given value, state whether the inequality is true or false.

 $p-42\le-2$  when  $p=40$  

• Write the inequality.

• Replace p with 40.

• Simplify.

• Have your answer ready for the next slide.

Poll

Is the sentence  $p-42\le-2$  true or false?

• TRUE

• FALSE

Multiple Choice

For the given value, state whether the inequality is true or false.

 $3.9+x\le12$  when  $x=6$  

• TRUE

• FASLE

Multiple Choice

For the given value, state whether the inequality is true or false.

 $y-\frac{1}{3}<1$  when  $y=\frac{4}{3}$  

• TRUE

• FASLE

Multiple Choice

For the given value, state whether the inequality is true or false.

 $s-9<4$  when  $s=6$  

• TRUE

• FASLE

Multiple Choice

For the given value, state whether the inequality is true or false.

 $14\le\frac{a}{3}+1$  when  $a=36$  

• TRUE

• FASLE

Classwork: Partners

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