Domain and Range Intro (2025 Math 8)

​Domain and Range

By Mrs. Moody

D = {-3, -1, 1, 4, 5}​

Order doesn't actually matter, but often you'll see least to greatest.

Domain is the set of X values

R = {-5, 0, 2, 6}

​

Don't repeat the 2​

​

Range is the set of Y values

Multiple Choice

Which of these sets is the RANGE of the graph?

Hint: y part of the coordinate

• {0, 6, 12, 18}

• {-2, 0, 2, 4}

• {-2, 2, 4}

• {6, 12, 18}

Fill in the Blanks

Multiple Choice

Is 5 a possible x-value for this function?

• yes

• no

Multiple Choice

What is the domain of this graph?

Hint: Look from Left to Right

• $$-4\le x\le2$$

• $$-4<x<2$$

• {-4, 0, -2}

• $$-2\le x\le4$$

Multiple Choice

What is the Domain?

Hint: Look from Left to Right

• -10 ≤ y ≤ 6
• y ≤ 6
• -10 ≤ x ≤ 6
• All Real Numbers

Multiple Choice

What is the furthest point to the LEFT (x) this graph? 

• -3

• 1

• 0

• -4

Multiple Choice

What is the furthest point to the RIGHT (x) on this graph? 

• -3

• 1

• 0

• -4

Multiple Choice

What is the LOWEST (y) point on this graph? 

• -3

• 1

• 0

• -4

Multiple Choice

What is the HIGHEST (y) point on this graph? 

• -3

• 1

• 0

• -4

Multiple Select

Check all the boxes that represpent Domain

• Input

• Output

• X values

• How far left, how far right

Multiple Choice

What is the Domain?

Hint: Look from Left to Right

• -3 ≤ x < 5
• -3 ≤ y < 5
• -8 ≤ x < 5
• -8 ≤ y < 5

Multiple Choice

What is the range in inequality notation?

Hint Look from Bottom to Top

• -2 ≤ x < 2

• 1 < x ≤ 5

• -2 ≤ x < 1

• 1 ≤ y < 5

Multiple Choice

What is the proper domain?

• x≥0
• y≥0
• All real numbers
• {0, 1, 2, 3, 4,...}

Multiple Choice

What is the domain of the graph?

• y≥1
• x ≥ 1
• All real numbers
• none of these

Multiple Choice

What is the range for the graph shown?

Hint: Look from Bottom to Top

• $$-6\le x\le5$$

• $$-5\le y\le5$$

• $$-6\le y\le5$$

• $$-5\le x\le5$$

Poll

How are you feeling about Domain and Range?

• Great!

• Fine, but I could use some practice

• Not Good. I need a lot more practice

• I don't know how to find the Domain and Range at all.