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Ninth Grade (Grade 9) Functions and Relations Questions

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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
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
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-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
Grade 9 Functions and Relations
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-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 CCSS: HSF-IF.A.1
Grade 9 Functions and Relations 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 and Relations
When y is written as f(x)
  1. Function Rule
  2. Function Notation
  3. Function Variable
Grade 9 Functions and Relations CCSS: HSF-IF.A.1
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