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Ninth Grade (Grade 9) Functions Questions

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Grade 9 Functions CCSS: HSF-IF.A.1
Find the Domain and Range.

{ (3, 1), (7, 5), (4, 8), (0, 6), (8, 0) }
  1. Domain : { 1, 2, 3, 4, 9 } Range : { 2, 3, 7 }
  2. Domain : { 0, 3, 4, 7, 8 } Range : { 0, 1, 5, 6, 8 }
  3. Domain : { 2, 4, 7, 8 } Range : { 1, 4, 5, 6, 9 }
  4. Domain : { 1, 2, 3, 6, 9 } Range : { 2, 4, 7, 8, 9 }
Grade 9 Functions CCSS: HSF-IF.A.1
Grade 9 Functions CCSS: HSF-BF.A.1, HSF-BF.A.1a, HSF-LE.B.5
In the year 2000, the population of Virginia was about 7,400,000.
Between the years 2000 and 2004, the population in Virginia grew
at a rate of 5.4%. At this growth rate, what function gives the population x years after 2000.
  1. [math] f(x) = 7,400,000 (1 + .054)^x [/math]
  2. [math] f(x) = 7,400,000 (1 - .054)^x [/math]
  3. [math] f(x) = 7,400,000 (.054)^x [/math]
  4. [math] f(x) = 7,400,000x^(.054) [/math]
Grade 9 Functions CCSS: HSF-LE.A.1a
A function which has a constant difference per interval is
  1. Linear
  2. Exponential
  3. Logarithmic
  4. None of the above
Grade 9 Functions
When y is written as f(x)
  1. Function Rule
  2. Function Notation
  3. Function Variable
Grade 9 Functions CCSS: HSF-IF.A.1
Grade 9 Functions
The y-value is also known as or related to the
  1. Range
  2. Input
  3. Domain
  4. Independent Variable
  5. Output
  6. Dependent Variable
  7. A, E, and F
  8. B, C, and D
Grade 9 Functions
The x-value is also known as or related to the
  1. Independent Variable
  2. Input
  3. Dependent Variable
  4. Range
  5. Domain
  6. Ouput
  7. A, B, and E
  8. C, D, and F
Grade 9 Functions
Which set of ordered pairs satisfies an exponential function?
  1. {(-2,1),(-8,2), (-32, 3), (-128, 4)}
  2. {(-1,2),(0,10), (1, 50), (2, 250)}
  3. {(1,2),(1,6), (1, 18), (1, 54)}
  4. {(1,2),(2,4), (3, 6), (4, 8)}
Grade 9 Functions
Multiply. [math]sqrt(33p)sqrt(6p)[/math]
  1. [math]sqrt(198p^2)[/math]
  2. [math]3psqrt22[/math]
  3. [math]3sqrt(22p)[/math]
  4. [math]9p^2sqrt(22)[/math]
Grade 9 Functions CCSS: HSF-LE.A.1a
A function which has a constant factor per interval is
  1. Linear
  2. Exponential
  3. Both
  4. None of the above
Grade 9 Functions CCSS: HSF-IF.B.5
Choose a reasonable domain for the following situation:
roast beef sandwiches for n people
  1. set of whole numbers
  2. set of integers
  3. set of positive real numbers
  4. set of real numbers
Grade 9 Functions
Simplify the following expression.
[math]3y^2 - 6y + 2 + 3y^2 + 8y[/math]
  1. [math]8y^2 +2[/math]
  2. [math]6y^2 +2 +14y[/math]
  3. [math]6y^2 + 2 - 14[/math]
  4. [math]6y^2 +2y + 2[/math]
Grade 9 Functions
Simplify the following expression.
[math]-5x - 2( 2x -4) - 5[/math]
  1. [math]-9x + 3[/math]
  2. [math]1x +3[/math]
  3. [math]-9x - 13[/math]
  4. [math]1x -13[/math]
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