CCSS.Math.Content.8.F.A.1

Is this table a function or not a function? 

• Function 
• Not a function 

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CCSS.Math.Content.8.F.A.1

Is this a direct variation?
y=2x

• yes
• no

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CCSS.Math.Content.8.F.A.1

What is the domain of the graph shown?

• x ≤ 5
• x ≤ -2
• x ≥ 5
• x ≥ -2

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CCSS.Math.Content.8.F.A.1

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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CCSS.Math.Content.8.F.A.1

Given the explicit formula, find the first four terms:
a_n = -400(¹/₂)^n-1

• -400, -200, -100, -50
• -400, 200, -100, 50
• -400, -399.5, -399, -398.5
• -400, -300, -200, -100

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CCSS.Math.Content.8.F.A.1

Is the relation a function? 
{(4,5), (4,-7), (4,2), (4,0), (4,9)}

• Yes
• No

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CCSS.Math.Content.8.F.A.1

Which choice describes the ranges of this graph. 

• All range values are positive
• All range values are negative
• Range values are both postive and negative 

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CCSS.Math.Content.8.F.A.1

Which graph does NOT pass the vertical line test?

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

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CCSS.Math.Content.8.F.A.1

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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CCSS.Math.Content.8.F.A.1

Find the first four terms of the sequence given the rule:
a_n = 4(5)^n-1

• 20, 100, 500, 2500
• 5, 20, 80, 320
• 4, 20, 100, 500
• 4, 9, 14, 19

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CCSS.Math.Content.8.F.A.1