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Ninth Grade (Grade 9) Functions and Relations Questions

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Grade 9 Functions and Relations CCSS: HSF-IF.A.2
Given f(x) = x + 1, find f(2r).
  1. 3r
  2. 3rx + 1
  3. 2rx
  4. 2r + 1
Grade 9 Functions and Relations CCSS: HSF-IF.B.5
Choose a reasonable domain for the following situation.
the depth of a submarine
  1. Set of negative real numbers
  2. Set of integers
  3. Set of positive real numbers
  4. Set of all real numbers
Grade 9 Functions and Relations
The output of a function.
  1. Independent Variable
  2. Function
  3. Dependent Variable
Grade 9 Functions and Relations CCSS: HSF-LE.B.5
A taxi charges an initial flat fee, plus a per mile rate. If the function T(m)=2.5+0.75m represents the total cost of a trip, where T is measured in dollars and m in miles, what is the per mile rate the taxi charges?
  1. $2.50 per mile
  2. $0.75 per mile
  3. $3.25 per mile
  4. This can't be determined without knowing the exact number of miles the taxi has driven for a specific fare.
Grade 9 Functions and Relations CCSS: HSF-IF.A.2
Evaluate the function f(x)=-4x-5 for f(-4).
  1. -21
  2. 11
  3. -49
  4. -11
Grade 9 Functions and Relations
The input of a function.
  1. Independent Variable
  2. Dependent Variable
  3. Function
Grade 9 Functions and Relations CCSS: HSF-IF.A.2
If f(x)=4x+5, find f(5).
  1. 5
  2. 10
  3. 20
  4. 25
Grade 9 Functions and Relations
The set of second coordinates of the ordered pairs.
  1. Function
  2. Domain
  3. Range
Grade 9 Functions and Relations CCSS: HSF-IF.A.1
A special type of relation that pairs each domain value with exactly one range value.
  1. Relation
  2. Function
  3. Objective
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 CCSS: HSF-LE.B.5
Shea owns a bakery, and primarily sells bread. He has found that he can approximately model his expenses each month with the function E(b)=7b+700, where E is Shea's total monthly expenses in dollars, and b is the number of loaves of bread he sells each month. Which of the following statements about his expenses is correct? There may be more than one correct answer.
  1. His monthly expenses are $707.
  2. It costs about $7 to make each loaf of bread.
  3. Shea has about $700 in fixed expenses each month.
  4. Shea will only break even (make more money than he has to spend in expenses) if he sells at least 100 loaves of bread.
Grade 9 Functions and Relations CCSS: HSF-IF.A.1
Find the Domain and Range.

{ (0, 2), (9, 3), (3, 7), (6, 3), (7, 3) }
  1. Domain : { 0, 1, 3, 5, 9 } Range : { 1, 2, 3, 4, 8 }
  2. Domain : { 0, 3, 6, 7, 9 } Range : { 2, 3, 7 }
  3. Domain : { 2, 4, 7, 8 } Range : { 1, 4, 5, 6, 9 }
  4. Domain : { 0, 3, 4, 7, 8 } Range : { 0, 1, 5, 6, 8 }
Grade 9 Functions and Relations
A set of ordered pairs.
  1. Range
  2. Relation
  3. Function
Grade 9 Functions and Relations CCSS: HSF-IF.A.2
Evaluate the function f(x)=-4x-5 for f(8).
  1. 27
  2. -37
  3. -52
  4. -27
Grade 9 Functions and Relations CCSS: HSF-IF.A.1
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 CCSS: HSF-IF.A.2
Evaluate the function f(x)=-4x-5 for f(0).
  1. -45
  2. -35
  3. -9
  4. -5
Grade 9 Functions and Relations CCSS: HSF-BF.A.1, HSF-BF.A.1a
What is the function rule for the following set of ordered pairs? {(-1,-7),(0,-4),(1,-1),(2,2),(3,5)}
  1. f(x)=x-6
  2. f(x)=-3x-4
  3. f(x)=3x-4
  4. f(x)=13x+43
Grade 9 Functions and Relations
The y-value is also known as, or related to, which of the following?
  1. Range
  2. Input
  3. Domain
  4. Independent Variable
  5. Output
  6. Dependent Variable
  7. A, E, and F
  8. B, C, and D
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