STAAR Math Inequalities

What is an inequality?

• An unbalanced relationship

• A number sentence (not equal)

• A number sentence equal to a value

• A variable

Inequalities have how many solutions?

• One

• None

• More than one

• Unknown

Ms. Hernandez is taking her children and their friends to the movies.  She will pay $10 for her adult ticket and $7 for each child ticket.  Ms. Hernandez does not want to spend more than $40.  Which inequality can be used to find c, the number of child tickets Ms. Hernandez can purchase?

• 7 + 10x > 40

• 10x - 7 ≤ 40

• 10 + 7x > 40

• 10 + 7x ≤ 40

Sam make $10.25 per hour working at Cheddars.  He plans to buy a laptop for $550.  Write and solve an inequality describing how many hours h Sam will have to work to be able to buy the laptop. (Round to the next higher hour)

• 10.25h < 550; less than 54 hours

• 10.25h > 550; greater than 54 hours

• 10.25h ≤ 550; at most 54 hours

• 10.25h ≥ 550; at least 54 hours

Solve

• A/F

• B/H

• C/G

• D/J

• A

• B

• C

• D

Solve and graph the inequality.

7n - 1 > 76

• A

• B

• C

• D

Solve

• A/F

• B/H

• C/G

• D/J

Solve

• A/F

• B/H

• C/G

• D/J

What is the rule for inequalities?

• If you add or subtract by a negative - flip the sign.

• If you multiply or subtract by a negative - flip the sign.

• Never flip the sign, ever.

• If you multiply or divide by a negative - flip the sign.