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

Ms. Brackemyer is collecting pencils.  The function p(x)=5x+12 tells us the total amount of pencils Ms. Brackemyer has after collecting for x number of days.  What is the meaning of p(8)=52?

• Ms. Brackemyer starts with 8 pencils and ends with 52.
• After 8 days, Ms. Brackemyer has 52 pencils.
• Ms. Brackemyer starts with 52 pencils and gets 4 more every day.
• Every day, Ms. Brackemyer gets 4 new pencils until she has 52.

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

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

• {(-9, 2), (0, 6), (1, -2), (-3, 6)}
• {(-1, 0), (4, 3), (-7, -3), (-1, -8)}
• {(3, 2), (-4, -2), (3, 1), (-4, 1)}
• {(5, 4), (2, 3), (1, 1), (2, 4)}

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

In the given relation, what domain value corresponds to the range value -2?
{(-1,2), (-2,4), (2,5), (0,-2), (2,0)}

• -2
• 0
• 2
• 4

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

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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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

Evaluate f(5)

• 1
• 10
• 13
• 16

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

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}
• D:{0, 1, 2, -4}
  R:{1, -3, -4}
• D:{0, 1, 2, 3, 4}
  R:{1, -3, -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.

Tags

CCSS.Math.Content.HSF.IF.A.1

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

If I know that f(2) = 4, what is another way I can write my answer?

• 2,4

• (2, 4)

• That is the only way to write it.

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

Level 4 If my function rule is 5x, what is my INPUT if the output is 10?

• 1

• 50

• 2

• 15

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