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OPERATIONS ON FUNCTIONS

Authored by Francisco Artuz

Mathematics

9th Grade

CCSS covered

Used 33+ times

OPERATIONS ON FUNCTIONS
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16 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

If  f(x) = x1f\left(x\right)\ =\ x-1 and g(x)=5x2g\left(x\right)=5x-2 , then  (f+g)(x)=\left(f+g\right)\left(x\right)= 

 5x2+15x^2+1  

 5x235x^2-3  

 6x+16x+1  

 6x36x-3  

Tags

CCSS.HSF-BF.A.1B

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

If  f(x) = x1f\left(x\right)\ =\ x-1 and g(x)=5x2g\left(x\right)=5x-2 , then  (fg)(x)=\left(f-g\right)\left(x\right)= 

-4x - 3

-4x +1

6x + 1

6x - 3

Tags

CCSS.HSF-BF.A.1B

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

If  f(x) = x1f\left(x\right)\ =\ x-1 and g(x)=5x2g\left(x\right)=5x-2 , then  (fg)(x)\left(\frac{f}{g}\right)\left(x\right) 

 x15x2\frac{x-1}{5x-2}  

 5x2x1\frac{5x-2}{x-1}  

 13\frac{-1}{3}  

 3-3  

Tags

CCSS.HSF-BF.A.1B

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

If  f(x) = 3x24f\left(x\right)\ =\ 3x^2-4 and g(x)=x28x+4g\left(x\right)=x^2-8x+4 , then  (fg)(x)=\left(f-g\right)\left(x\right)= 

 2x28x82x^2-8x-8  

 2x2+8x82x^2+8x-8  

 2x28x2x^2-8x  

 2x2+8x2x^2+8x  

Tags

CCSS.HSF-BF.A.1B

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

If  f(x) = 3x24f\left(x\right)\ =\ 3x^2-4 and g(x)=x28x+4g\left(x\right)=x^2-8x+4 , then  (fg)(x)=\left(f\cdot g\right)\left(x\right)= 

 3x424x3+8x2+32x163x^4-24x^3+8x^2+32x-16  

 3x48x163x^4-8x-16  

 3x424x3+8x232x163x^4-24x^3+8x^2-32x-16  

 3x424x3+16x2+32x163x^4-24x^3+16x^2+32x-16  

Tags

CCSS.HSF-BF.A.1C

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

If  f(x) = 3x24f\left(x\right)\ =\ 3x^2-4 and g(x)=x28x+4g\left(x\right)=x^2-8x+4 , then  (fg)(x)=\left(\frac{f}{g}\right)\left(x\right)= 

 3x24x28x+4\frac{3x^2-4}{x^2-8x+4}  

 x28x+43x24\frac{x^2-8x+4}{3x^2-4}  

 3x21x28x\frac{3x^2-1}{x^2-8x}  

 14x\frac{1}{-4x}  

Tags

CCSS.HSF-BF.A.1B

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find f(2) if f(x)= 3x-9

0
2
3
-3

Tags

CCSS.HSF.IF.A.2

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