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Ninth Grade (Grade 9) Functions and Relations Questions

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Grade 9 Functions and Relations
Given f(x)=x + 1, find f(2r).
  1. 3r
  2. 3rx + 1
  3. 2rx
  4. 2r + 1
Grade 9 Functions and Relations
When y is written as f(x).
  1. Function Rule
  2. Function Notation
  3. Function Variable
Grade 9 Functions and Relations
Grade 9 Functions and Relations
The tree in Damien's backyard is 52 feet tall. It grows 0.6 feet per year. Write a function that represents this situation.
  1. [math]f(t) = 52t + 0.6[/math]
  2. [math]f(t) = 52 + 0.6t[/math]
  3. [math]f(t) = 52 + 9t[/math]
  4. [math]f(t) = 52t + 9[/math]
Grade 9 Functions and Relations
Find the domain and range.

{(8,3), (2,7), (0,3), (5,9), (1,2)}
  1. D: {0,1,2,5,8} R: {2,3,3,7,9}
  2. D: {0,1,2,5,8} R: {2,3,7,9}
  3. D: {2,3,7,9} R: {0,1,2,5,8}
  4. D: {2,3,3,7,9} R: {0,1,2,5,8}
Grade 9 Functions and Relations 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 and Relations
Troy wants to join Universal Gym. The gym charges a one-time membership fee of $50 and $24.50 per month. Write a function that represents this situation.
  1. [math]f(m) = 50m+24.50[/math]
  2. [math]f(m) = 50+24.50m[/math]
  3. [math]f(m) = 50m+24.50m[/math]
  4. [math]f(m) = 50+24.50[/math]
Grade 9 Functions and Relations 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 and Relations
Grade 9 Functions and Relations
Grade 9 Functions and Relations
Jorel has a sister that is 5 years younger than three times his age. Write a function that represents this situation.
  1. [math]f(x) = 5-3x[/math]
  2. [math]f(x) = 5-3[/math]
  3. [math]f(x) = 5x-3[/math]
  4. [math]f(x) = 3x-5[/math]
Grade 9 Functions and Relations CCSS: HSF-IF.A.1
Grade 9 Functions and Relations
Which relation represents a function?
  1. {(2,6), (-3,6), (4,9), (2,10)}
  2. {(-4,4), (-3, 3), (-2,2), (-1,1), (-4, 0)}
  3. {(3,5), (4, 8), (2, 9)}
  4. {(8, 0), (5,2), (8,-1), (4,-2)}
Grade 9 Functions and Relations
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 and Relations
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 and Relations CCSS: HSF-IF.A.1
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