Brantley Algebra Functions Quiz Review

Presentation

•

Mathematics

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7th - 9th Grade

•

Medium

•

CCSS

8.F.A.1, HSF-BF.A.1A, HSF.IF.A.2

Standards-aligned

Lesley Brantley

Used 6+ times

FREE Resource

8 Slides • 20 Questions

Functions Quiz Review

function- yes or no

evaluating functions- f(3)

adding polynomials- f(x)+g(x)

subtracting polynomials- f(x)-g(x)

multiplying polynomials- f(x) x g(x)

dividing polynomials f(x)/g(x)

function word problems

Word Problem

It is well known that the more you prepare, the better you will do on a test in school. Let’s assume that if you just pay attention in class and take good notes, you will pass with a 60. For each hour that you spend studying (including all of the homework you do), your test grade will go up 8 points.

Function: f(h) = 60 + 8h

What does f(3) = 84 mean?

Multiple Choice

Charlie worked for a stone setting company this past summer. He earned $50 just for coming to work and an additional $30 every hour for each hour he worked. Which equation is a function for earnings E as a function of time worked t (in hours)

E(t) = 50t + 30t

E(t)= 50 + 30t

E(t) = t (30 + 50)

E(t) = 80t

Multiple Choice

A fish tank has a volume of 600 cubic inches. It is emptied at a constant rate of 10 cubic inches every minute. Which function notation equation represents the volume as a function of time?

f(x)=600 + 10x

f(x)=600 -10x

f(x)=610x

f(x)=-600 - 10x

Multiple Choice

Jason earns $10 per hour serving burgers at McDonalds. He already has $20 in his pocket. Which is a function notation representation of this situation?

f(x) = x + 30

f(x) = -10x + 20

f(x)= 10x + 20

f(x) = 20x + 10

Multiple Choice

Joey currently owes $35,000 in student loans and is making payments of $250 each month.

Which function notation describes the situation?

f(x) = 35,000 +250x

f(x) = -35,000 + 250x

f(x) = -35,000 - 250x

Domain

The set of X-VALUES; the INPUT

Range

the set of Y-VALUES; the OUTPUT

Finding Range values for a given domain.

Find the range for f(x)= 2x + 3 given the domain {-2,5,9}.

This means that you need to find:

f(-2)

f(5)

f(9)

So... f(-2)=-1

f(5)=13

f(9)=21

So the range is {-1, 13, 21}.

Open Ended

Find the range of

f\left(x\right)=x^2+3x

if the domain is {-2, 0, 5}.

Type response here

Multiple Select

Identify the range values for the function $f\left(x\right)=\ 2x-5$ for the domain values $\left\{0,\ 1,\ 2\right\}$

$-5$

$-3$

$-1$

$0$

$1$

Function

a relation is which every x value is paired with EXACTLY one y value

Multiple Select

Is this a function?

yes

Multiple Select

Is this a function?

yes

Multiple Select

Is this a function?

yes

Multiple Select

Is this a function?

yes

Multiple Select

Is this a function?

yes

Multiple Select

Is this a function?

yes

Multiple Choice

A function of x consists of five ordered pairs of the form (x, y). Four of the ordered pairs are shown here. $\left(1,\ -3\right),\ \left(3,\ 6\right),\ \left(-5,\ 7\right),\ \left(5,\ 8\right)$
Which could be the 5th ordered pair of the function?

$\left(3,\ 7\right)$

$\left(-3,\ 0\right)$

$\left(-5,\ 3\right)$

$\left(1,\ 7\right)$

Function Operations

Evaluating Functions

Add f(x) + g(x)

Subtract f(x) - g(x)

Multiply g(x)*h(x)

Distribute 4f(x)

Multiple Choice

What is f(2)?

-2

Multiple Choice

What is f(1)?

-1

Multiple Choice

$g\left(x\right)=-2x^2+5x-1$ Find g(-4).

-11

-53

-63

Multiple Choice

Let

f\left(x\right)=-2x^2+5x-3.\ Find\ -3f\left(x\right).\

6 x^{2} + 15 x + 9

$6x^2+5x-3$

$6x^2-15x+9$

Multiple Choice

Find f(x) - g(x)

2x² + 8x - 8

3x² + 8x - 8

2x² + 8x + 8

2x² + 4x - 8

Multiple Choice

Find f(x) + g(x).

3x² - 8x

4x² - 8x - 8

4x² - 8x + 8

4x² - 8x

Multiple Choice

let f(x)=3x - 5 and

let g(x)=x - 10.

Find f(x) x g(x).

$x^2-35x-4$

$3x^2-4x+50$

$x^2+50x-35$

$3x^2-35x+50$

Function Quiz TOMORROW!!!!

STUDY!!!

Functions Quiz Review

function- yes or no

evaluating functions- f(3)

adding polynomials- f(x)+g(x)

subtracting polynomials- f(x)-g(x)

multiplying polynomials- f(x) x g(x)

dividing polynomials f(x)/g(x)

function word problems

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