Domain and range

Domain and range

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Domain

Range

To find the domain, look at which possible x-values there are

On this graph, x can be any number that is greater than -5, so the domain is x>=-5

To find the range, find which y-values are possible

On this graph, y can be any number less than or equal to 5 so the range is y<=5

2 more examples of domain and range

When there is a white dot, that value is not included, a black dot is included

On this graph, that means -3 is not included but the value of 1 is so the domain is -3

Multiple Choice

Is 5 a possible x-value for this function?

• yes

• no

Multiple Choice

Is 0 a possible x-value for this function?

• yes

• no

Multiple Choice

Is 2 a possible x-value for this function?

• yes

• no, because a white dot is an excluded value

• no, because a black dot is an excluded value

Multiple Choice

Is -3 a possible x-value for this function?

• no

• yes, because a white dot is an excluded value

• yes, because a black dot is an included value

Multiple Choice

What is the range of this graph

• -5<=y<=4

• 4<y<5

• -3<y<2

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Multiple Choice

Is -1 a possible x-value?

• Yes

• No

Multiple Choice

Is 0 a possible x-value?

• Yes

• No

Multiple Choice

True or False: Since there is a white dot on 8, x can be equal to 8?

• True

• False

Multiple Choice

What is the domain of this function

• x>=-5

• -5<x<5

• y<=-5

Multiple Choice

What is the range of this function

• -5<=x<=5

• -5<x<5

• y>=5

• y<=5

Multiple Choice

What is the domain?

• {0, 1, 2, 15}

• (0, 1, 2, 3}

• {3, 7, 11, 15}

• {3, 7, 11, 3}

Multiple Choice

What is the range?

• -4 < x ≤ 5

• -4 ≤ x < 5

• -3 < y < 3

• -3 ≤ y ≤ 3

Multiple Choice

What is the Range?

• y ≥ 6
• y ≤ 6
• -10 ≤ y ≤ 6
• -10 ≤ x ≤ 6