MS 9A: Solving Linear Inequalities

You flip an inequality symbol when you...

• subtract
• multiply and divide only
• multiple by a negative number
• multiple or divide by a negative number

When graphing an inequality, what does a closed circle mean?

• The number is not included in the list of answers.
• The number is included in the list of answers.

SOLVE: -13t > 26

• t > -2

• t > 2

• t < 2

• t < -2

Match the graph with its inequality.

• 11 < a
• 11 > a
•  11 ≤ a
•  11 ≥ a

What is the inequality for:

You must be at least 48 inches tall to ride the bumper cars.

• h < 48

• h > 48

• h ≤ 48

• h ≥ 48

What is the inequality for:

The postal scale will weigh a maximum of 50 lbs.

• p < 50

• p > 50

• p ≤ 50

• p ≥ 50

Match the graph with its inequality.

• x  ≤ 3 or x > -2

• -2 < x < 3

• x  ≤ 3 and x ≥ -2

• x  ≤ 3 and x > -2 
  

Translate the following phrase: All students must get at least a 65% for the year in order to pass math.

• s = 65
• s > 65
• s ≥ 65
• s ≤ 65

-7 + 10z > -27

• z < -2
• z > -34
• 2 > z
• z > -2

You need to save a minimum of $1200 to purchase your new laptop.  If you already have saved $400 and make 11 per hour, h, at your job, which inequality could be use to solve to determine how many hours you need to work to save enough money.

• 11h + 1200 ≥ 400
• 11h + 400 < 1200
• 11h + 400 > 1200
• 11h + 400 < 1200