Inequalities Introduction

Inequalities Introduction

What is an inequality?

• An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value.

How can we represent an inequality?

PLEASE WRITE THESE DOWN IN YOUR NOTEBOOK!

• Less than <

• Greater than >

• Less than or equal to  $\le$  

• Greater than or equal to  $\ge$  

Multiple Choice

Which symbol represents less than?

• >

• <

Multiple Choice

Which symbol represents greater than?

• >

• <

Multiple Choice

Which symbol represents greater than or equal to?

• $\ge$

• $\le$

Multiple Choice

Which symbol represents less than or equal to?

• $\ge$

• $\le$

Writing Inequalities

• We write out the inequality from left to right

•  six is less than eight

• 6 < 8

• four is greater than two

• 4 > 2

Multiple Choice

x is less than or equal to five

• x < 5

• x > 5

• x ≤ 5

Multiple Choice

c is greater than or equal to one

• c > 1

• c ≥ 1

• $c\le1$

Open Ended

three is less than seven

Open Ended

twelve is greater than nine

Multiple Choice

b is less than or equal to ten

• b < 10

• b >10

• $b\ge\ 10$

• b ≤ 10

Multiple Choice

y is greater than or equal to eleven

• y ≥ 11

• y > 11

• $y\le\ 11$
  

• y < 11