Functions (general)

Functions (general)

9th - 12th Grade

20 Qs

quiz-placeholder

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Functions (general)

Functions (general)

Assessment

Quiz

Mathematics

9th - 12th Grade

Hard

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

f(x) = 2x2 - x + 1

g(x) = 3x2 +2x - 3

4f(x) + 2g(x) =

2x2 + 2

2x2 - 2

14x2 + 2

14x2 - 2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 g(x)=x3+x2g\left(x\right)=x^3+x^2  
 h(x)=3x+2h\left(x\right)=3x+2  
 Find(gh)(x)Find\left(g-h\right)(x)  

 x3x23x+2x^3-x^2-3x+2  

 x3x2+3x+2-x^3-x^2+3x+2  

 x2+3x+2-x^2+3x+2  

 x3+x23x2x^3+x^2-3x-2  

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

f(x) = x2+9

g(x) = x-9

Find f(x)-g(x).

x2+x+9

x2-x+9

x2-x

x2-x+18

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Demonstrate the ability to state or write the problem correctly:

f(x)g(x) = –3x(–3x+6)

f(x)g(x) = –3x(–3x)

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=x2+5xf\left(x\right)=x^2+5x  
 g(x)=x2g\left(x\right)=x-2  

Find  (g+f)(0)\left(g+f\right)\left(0\right)  

38

158

110

-2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

f(x) = x3 - 3x

g(x) = -4x + 1

Find f(x) ⋅ g(x)

-4x3 - 5x2 -3

-4x3 + 2x2 - 3x

-4x4 + x3 + 12x2 - 3x

-4x4 - x3 + 12x2 + 3x

Answer explanation

f(x)g(x)=(x33x)(4x+1)f\left(x\right)\cdot g\left(x\right)=\left(x^3-3x\right)\left(-4x+1\right)
=4x4+x312x23x=-4x^4+x^3-12x^2-3x

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the third step in performing operations on functions?

Transform into operation form.

Replace the value of each function.

Remove the grouping symbols.

Combine like terms then perform the indicated operation

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