2. Simplify: -3(5x - 3) -2(6x - 6)

4. Find the length

and width

5. Solve for b: A = ½b • h

3. Find the length & width:

2x + 10

x P = 68

Vocabulary:

1. Discreet Data: Data that has a limited number of

values, with space between each value. Usually whole

numbers.

2. Continuous Data: Data with values that vary

continuously over the graph. Data that is unbroken by

space between values.

Examples:

1. The number of suitcases lost by an airline:

2. The growth of corn plants:

3. The number of ears of corn harvested.

function

function

Not a function

Not a function

……….

1a. Domain: {-4, -2, 3, 4} Range: {-2, 2, 1}

1b. Domain: {0, 1, 7} Range: {-6, 2, -4, 4}

2a. 2b.

3a. 3b.

Function Not a Function

0

1

7

-6

2

-4

4

-4

-2

3

4

-1

2

1

Not a

Function

Function Rules f(x)..g(x)..h(x)

……….

Function Rules f(x)..g(x)..h(x)

y = -3x + 2

y = -3(-1) + 2

y = 3 + 2

y = 5

H

e

i

g

h

t

H

e

i

g

h

t

P

e

o

p

l

e

A. Cost of a laptop, past 10 years B. Drag racing before hitting tree

C. World Population, last 700 years D. Person's height during lifetime

E. 3-point shot F. Running up, then down a hill

C

o

s

t

S

p

e

e

d

S

p

e

e

d

4 5 6

The x variable is given on each graph. You will add the y

variable before watching the video. Please number your

graphs, matching the order of the video watched.

An easy one to begin:

Follow Closely:

……….

y = 5x -7y = 5(-3) - 7y = -15 - 7y= -22

y = 5x -7y= 5(-2) -7y= -10 - 7y= -17

y = 5x - 7y = 5(4) - 7y= 20 - 7y= 13

Practice

Steps

1. Sub in each domain value in one @ a time.

2. Solve for y in each

3. List y values in braces.

y = 3x + 1

y = 3(-4) + 1

y = -12 + 1

y = -11

y = 3x + 1

y = 3(0) + 1

y = 0 + 1

y = 1

Ans. { -11, 1, 7}

y = 3x + 1

y = 3(2) + 1

y = 6 + 1

y = 7

y = -2x + 3

y = -2(-5) + 3

y = 10 + 3

y = 13

y = -2x + 3

y = -2(-2) + 3

y = 4 +3

y = 7

y = -2x + 3

y = -2(6) + 3

y = -12 +3

y = -9

1.

2.

Using the Vertical Line Test

Use the vertical line test to check

if the relation is a function only if

the relation is already graphed.

1. Hold a straightedge (pen, ruler,

etc) vertical to your graph.

2. Drag the straightedge from left

to right on the graph.

3. If the straightedge intersects

the graph once in each spot ,

then it is a function.

4. If the straightedge intersects the

graph more than once in any

spot, it is not a function.

A function!

……….