Grade 9 Math: Interval Notation

Worksheet for Grade 9 students covering interval notation, including writing, graphing, and interpreting intervals.

Grade 9 Math AlgebraInterval Notation

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Includes

Fill in the BlanksShort AnswerMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.HSA.CED.A.1CCSS.MATH.CONTENT.HSA.REI.D.11

Topics

mathalgebrainterval notationgrade 9

6 sections · Free to use · Printable

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Read each question carefully and follow the instructions to write or graph the intervals.

Write the interval notation for each inequality.

1. x > 5:

2. x ≤ -2:

3. 3 < x ≤ 7:

4. x < 0 or x ≥ 4:

Graph each interval on the number line provided.

1. [-3, 2)

2. (-∞, 0]

1. Which interval notation represents the set of all real numbers greater than or equal to -4?

(-4, ∞)

[-4, ∞)

( -∞, -4)

(-∞, -4]

2. The interval (1, 5] represents which inequality?

1 < x < 5

1 ≤ x ≤ 5

1 < x ≤ 5

1 ≤ x < 5

Determine if the following statements are true or false.

1. The interval [ -∞, 3 ] is a valid interval notation.

True

False

2. The interval (2, 7) includes the numbers 2 and 7.

True

False