Inequalities

Inequalities

Poll

Overall, how do you feel about inequalities so far?

• 😞

• 😐

• 😃

Multiple Choice

Greater than or equal to

• <

• >

• ≤

• ≥

Multiple Choice

Greater than

• <

• >

• ≤

• ≥

Multiple Choice

Less than or equal to

• <

• >

• ≤

• ≥

Multiple Choice

When graphing an inequality, you use an OPEN dot when you use which symbol?

• <, >
• ≤, ≥ 
• ≤, <
• ≥, >

Multiple Choice

When you graph an inequality, you used a CLOSED dot when you use which symbols?

• ≤, ≥ 
• <, >
• ≤, <
• ≥, >

Multiple Choice

Match the graph with its inequality.

• a < 11

• a > 11

• a ≥ 11

• a ≤ 11

Multiple Choice

• x is less than or equal to -2

• x < -2

• -2 < x

• x is greater than -2

Solving Inequalities

• We solve inequalities the same way we solve equations.

• BUT THERE IS ONE DIFFERENCE THAT IS IMPORTANT!

• If you divide or multiply by a negative number you MUST flip the inequality sign.

Try to solve this on paper!

What would you do first?

What would you do second?

WHAT MUST YOU DO?

Multiple Choice

You flip an inequality symbol when you...

• subtract

• multiply and divide only

• multiple by a negative number

• multiple or divide by a negative number

Multiple Choice

You flip an inequality symbol when you...

• subtract

• multiply and divide only

• multiple by a negative number

• multiple or divide by a negative number

Multiple Choice

Solve 
-9h > (-63)

• h < 7
• h > 7
• h < -7
• h > -7

Multiple Choice

Solve and choose the correct graph:

• A
• B
• C
• D

Multiple Choice

-4x + 14 ≤ 54

• x ≥ - 10

• x ≤ -10

• x ≥ 10

• x ≤ 10