Exploring Compound Inequalities in Algebra

This video tutorial covers compound inequalities, explaining how to write, graph, and solve them. It distinguishes between 'and' and 'or' inequalities, showing how to graph each type. The tutorial also includes solving compound inequalities and applying them to real-life scenarios, such as determining the operating temperature range for devices.

What does the 'and' in a compound inequality mean?

• Neither condition must be true

• Both conditions must be true

• Only one condition must be true

• At least one condition must be true

How do you graph a compound inequality with 'and'?

• By graphing each inequality separately

• By finding the intersection of the graphs

• By finding the union of the graphs

• By using only one of the inequalities

What does the 'or' in a compound inequality mean?

• Only one condition must be true

• Neither condition must be true

• Both conditions must be true

• At least one condition must be true

How do you graph a compound inequality with 'or'?

• By finding the union of the graphs

• By finding the intersection of the graphs

• By using only one of the inequalities

• By graphing each inequality separately

When solving compound inequalities, what must you do to maintain a true statement?

• Ignore the middle section

• Perform the same operation on all sections

• Only perform operations on one section

• Only perform operations on the left section

What happens to the inequality symbols when you divide by a negative number?

• They become equal signs

• They stay the same

• They flip

• They disappear

Tags

CCSS.6.EE.B.8

How do you write a compound inequality for a number x that is greater than -8 and less than or equal to 4?

• x < -8 or x <= 4

• x > -8 and x <= 4

• -8 < x <= 4

• -8 <= x < 4

What is the first step in solving the compound inequality -4 < -2x + 1 <= 8?

• Multiply by -2

• Divide by -2

• Subtract 1 from all sections

• Add 1 to all sections

What is the operating temperature range in degrees Fahrenheit for a device that operates between 0°C and 35°C?

• 0°F to 100°F

• 32°F to 100°F

• 0°F to 35°F

• 32°F to 95°F

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What could cause a device to be below its operating temperature range?

• Using it in a cold environment

• Charging it overnight

• Leaving it in a hot car

• Using it in a warm room