Is it a Function?

Which set of ordered pairs represents y as a function of x?

• {(-1, 2), (2, -1), (5, 6), (5, 7)}

• {(-2, 3), (-2, 4), (-2, 5), (-2, 6)}

• {(-5, -6), (-6, -5), (-7, -8), (-8, -7)}

• {(-9, 0), (0, -7), (1, -3), (0, -3)}

Tags

CCSS.8.F.A.1

Which graph does not represent y as a function of x?

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Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each y-value has only one x-value paired with it.

• No, because the x-value 11 has two y-values pair with it.
• No, because each y-value has only one x-value paired with it.

Tags

CCSS.8.F.A.1

Which of the following is a function?

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Is the following graph a function?

• Yes, because the x never repeats.

• Yes, because they are individual dots.

• No, because the x repeats.

• No, because it is not a line.

Which is a function?

• W

• X

• Y

• Z

Tags

CCSS.8.F.A.1

Which of the following is a function?

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Tags

CCSS.8.F.A.1

Which set of ordered pairs is a function?

• {(9,5), (10,5), (9,-5), (10,-5)}

• {(3,4), (4,-3), (7,4), (3, 8)}

• {(6,-5), (7, -3), (8, -1), (9, 1)}

• {(2, -2), (5, 9), (5, -7), (1, 4)}

Tags

CCSS.8.F.A.1

Is this relation a function?

• Function

• Not a function

Tags

CCSS.8.F.A.1

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4