Interval Notation

Welcome to our first Quizizz Lesson on...

Multiple Choice

For INEQUALITIES, the variable represents LOTS of solutions.

• True

• False

Multiple Choice

How would you describe the solution set for

 $x\ ≥\ 91$  ?

• the solution set is 91
  

• numbers less than or equal to 91
  

• x values greater than 91
  

• all real numbers greater than or equal to 91

Fill in the Blank

Remind me... How can we tell what our solutions are JUST by looking at an inequality's graph on a number line?

FYI: You may need to GRAPH some of these on paper FIRST to be able to answer.

You can do it :).

Multiple Choice

Write the following in interval notation

x > 6 and x ≤ 10

• (-∞, 6) and (10, ∞)

• [6, 10)

• (-∞, 6] and [10, ∞)

• (6, 10]

Multiple Choice

When writing a solution set in interval notation, what do I use for

< or > ?

• [ ]

• ( )

Multiple Choice

When writing a solution set in interval notation, what do I use for

≤ or ≥ ?

• [ ]

• ( )

Multiple Choice

Write the inequality in interval notation.

• [-4, -1)

• (-4, -1)

• (-4, -1]

• [-4, -1]

Multiple Choice

Can you use the symbols [ or ]

with infinity?

• Yes

• No

Multiple Choice

Write the following solution in interval notation:

x ≥ -3

• [ -3, ∞ )

• ( -3, ∞ )

• ( -∞ , -3 )

• ( -∞ , -3]

Multiple Choice

Which is the closest to the meaning of [a, b) ?

• All values between a and b, including both a and b

• All values between a and b, excluding both a and b

• All values between a and b, including a, but excluding b

• All values between a and b, including b, but excluding a

Multiple Choice

Write the inequality in interval notation.

• (-2,5)

• (-∞,-2) or (5,∞)

• [-2,5]

• (-∞,-2] or [5,∞)

Multiple Choice

Express the following in Interval Notation

-8 ≤ x < 8

• [-8, 8]

• [-8,8)

• (-8, 8]

• (-8, 8)

Open Ended

Describe to me how these cousins (inequalities and interval notation) are RELATED: