Composition and Inverses of Functions

Composition and Inverses of Functions

11th Grade

8 Qs

quiz-placeholder

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Composition and Inverses of Functions

Composition and Inverses of Functions

Assessment

Quiz

Mathematics

11th Grade

Hard

CCSS
HSF-BF.A.1C, HSF-BF.A.1B, HSF-BF.B.4A

+1

Standards-aligned

Created by

Bee Paul

Used 1+ times

FREE Resource

8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Given  f(x)=4x25x+7f\left(x\right)=4x^2-5x+7  and  g(x)=3x28x9g\left(x\right)=3x^2-8x-9  , find  (fg)(x)\left(f-g\right)\left(x\right)  .

 7x213x27x^2-13x-2  

 x213x2x^2-13x-2  

 x2+3x+16x^2+3x+16  

 x2+3x2x^2+3x-2  

Tags

CCSS.HSF-BF.A.1B

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Given f(x)=x2+x56f\left(x\right)=x^2+x-56 and g(x)=x7g\left(x\right)=x-7 , find (fg)(x)\left(\frac{f}{g}\right)\left(x\right) .

x+8x+8 when {x7}\left\{x\ne7\right\}

x2+8x^2+8 when {x7}\left\{x\ne7\right\}

x2+2x+8x^2+2x+8 when {x7}\left\{x\ne7\right\}

x+8x+8

Tags

CCSS.HSF-BF.A.1B

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Given  f(x)=2x5f\left(x\right)=2x-5  and  g(x)=x23x+8g\left(x\right)=x^2-3x+8  , find  (fg)(x)\left(f\circ g\right)\left(x\right)  

 x2x+3x^2-x+3  

 2x311x2+31x402x^3-11x^2+31x-40  

 2x23x+32x^2-3x+3  

 2x26x+112x^2-6x+11  

Tags

CCSS.HSF-BF.A.1C

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Given  f(x)=x6f\left(x\right)=x-6  and  g(x)=2x25x+10g\left(x\right)=2x^2-5x+10  , find  (gf)(x)\left(g\circ f\right)\left(x\right)  

 2x229x+1122x^2-29x+112  

 2x25x322x^2-5x-32  

 2x24x+42x^2-4x+4  

 2x317x2+40x602x^3-17x^2+40x-60  

Tags

CCSS.HSF-BF.A.1C

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Given  f(x)=4x+3f\left(x\right)=4x+3  and  g(x)=x27x+10g\left(x\right)=x^2-7x+10  , find  (ff)(x)\left(f\circ f\right)\left(x\right)  

 x23x+13x^2-3x+13  

 4x228x+434x^2-28x+43  

 16x+616x+6  

 16x+1516x+15  

Tags

CCSS.HSF-BF.A.1C

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Find the inverse of the function  f(x)=5x7f\left(x\right)=5x-7  

 f1(x)=15x+75f^{-1}\left(x\right)=\frac{1}{5}x+\frac{7}{5}  

 f1(x)=15x75f^{-1}\left(x\right)=\frac{1}{5}x-\frac{7}{5}  

 f1(x)=7x+5f^{-1}\left(x\right)=7x+5  

 f1(x)=15x17f^{-1}\left(x\right)=\frac{1}{5}x-\frac{1}{7}  

Tags

CCSS.HSF-BF.B.4A

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Find the inverse of the function  g(x)=x2+3g\left(x\right)=x^2+3  

 g1(x)=12x32g^{-1}\left(x\right)=\frac{1}{2}x-\frac{3}{2}  

 g1(x)=±x3g^{-1}\left(x\right)=\pm\sqrt{x-3}  

 g1(x)=±x3g^{-1}\left(x\right)=\pm\sqrt{x}-3  

 g1(x)=x23g^{-1}\left(x\right)=x^2-3  

Tags

CCSS.HSF-BF.B.4A

8.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Identify the sets of inverse functions by using their result from composition of the functions.

f(g(x))=2x1f\left(g\left(x\right)\right)=2x-1

f(g(x))=xf\left(g\left(x\right)\right)=x

f(g(x))=13x3f\left(g\left(x\right)\right)=\frac{1}{3}x-3

f(g(x))=x22f\left(g\left(x\right)\right)=x^2-2

Tags

CCSS.HSF-BF.B.4B