TEKS.MATH.8.5G

For a set of ordered pairs to be considered a function, ______ cannot repeat.

• X-values
• Y-values
• Positive Numbers
• Negative Numbers

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TEKS.MATH.8.5G

Which set of values 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)

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TEKS.MATH.8.5G

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values
• No, because the vertical line test shows there are repeating input values

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TEKS.MATH.8.5G

Is this graph a function or not a function? 

• Function 
• Not a Function 

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TEKS.MATH.8.5G

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values
• No, because the vertical line test shows there are repeating input values

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TEKS.MATH.8.5G

Evaluate f(2)

• 0
• 2
• 7
• 4

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TEKS.MATH.8.5G

Is the relation a function? Why.

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

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TEKS.MATH.8.5G

Answer.

• A
• B
• C
• D

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TEKS.MATH.8.5G

Which of the following is the correct equation for the given graph?

• f(x) = -(x + 2)² - 4
• f(x) = (x - 2)² - 4
• f(x) = -3(x - 2)² - 4
• f(x) = -3(x + 2)² - 4

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TEKS.MATH.8.5G

Which of the following relations represents y as a function of x?
I. {(1, 4), (2, 5), (3, 6)}
II. {(1, 4), (2, 4), (3, 4)}
III. {(1, 4), (2, 4), (1, 3)}
IV. {(1, 4), (1, 2), (1, 3)}

• I, II, and III only
• II and IV only
• III and IV only
• I and II only

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TEKS.MATH.8.5G