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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. $f(t) = 52t + 0.6$
2. $f(t) = 52 + 0.6t$
3. $f(t) = 52 + 9t$
4. $f(t) = 52t + 9$
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. $f(m) = 50m+24.50$
2. $f(m) = 50+24.50m$
3. $f(m) = 50m+24.50m$
4. $f(m) = 50+24.50$
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. $f(x) = 5-3x$
2. $f(x) = 5-3$
3. $f(x) = 5x-3$
4. $f(x) = 3x-5$
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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