Alebra 1 Chapter 4 review

Vocab

100

The Set of 1st elements

Domain

200

Special Type of relation

function

300

The ratio of variables is a nonzero constant

direct variation

400

An equation that pairs each member of the domain with the range

The function Rule

500

The difference between any two consecutive terms

arithmetic sequence

Function Rules

100

[(-2,-4), (0,0),(1,2),(3,6)]

Y=2x

200

[(-2,3),(0,5),(2,7),(3,8)]

y=x+5

300

[(-4,2), (-2,1),(0,0),(2,-1),(4,-2)]

y=-1/2x

400

[(-8,-5),(-4,-1),(-3,0),(2,5),(4,7)]

y=x+3

500

[(-2,8),(-1,4),(0,0),(1,-4),(5,-20)

y=-4x

Domain/Range

100

List the domain

[(6,10), (-9,14), (4,2), (-9,8)]

6,-9,4,-9

200

List the Domain

(1.3,3.7), (1.4,3.7), (1.5,3.7), (1.6, 3.7)]

1.3,1.4,1.5,1.6

300

List range; complete mapping diagram

[(-5,1), (-5,2), (2,8), (5,6)]

1,-5,2,5

400

Complete mapping diagram; state whether its a function

[(-6,-5), (-3,4), (1,7), (4,-3)]

yes its a function

500

[(-2,-6),(-1,-3),(0,0),(1,3),(2,6)}

y=3x

Direct/Inverse

100

Direct or inverse

  _X_                __y__

1                         7

2                        14

3                        21

4                         28

Direct

200

Direct or inverse

__X_                        ___Y__

2                               72

4                               36

8                               18

12                             12

Inverse

300

Direct or inverse; what is the common variation

_x__                           __y__

1                                  6

2                                  12

3                                  18

4                                  24

Direct

Common-6

400

Direct or inverse; what is the common variation

_x__                           __y__

2                                  9

3                                  6

6                                  3

9                                  2

Inverse

Common-18

500

Direct or inverse; common variation; function rule

__x_                      __y_

2                               5

3                               10/3

4                               2.5

5                                2

Inverse

common- 10

y=10/x

Sequence

100

Is the sequence arithmetic

3,7,11,15

Yes

200

Is the sequence arithmetic. if so, what's the common difference.

6,2,-2,-6,-10

Yes

-4

300

Use a table and list to represent the first 4 terms in a sequence. where a= -4 and d=3

Ordered pairs

(1,-4)

(2,-1)

(3,2)

(4,5)

400

Using the equation a(n)=a(1)+(n-1)d

find the 30th term

3,8,13,18

30th term = 148

500

Using the equation a(n)=a(1)+(n-1)d

find the 38th term

9,1,-7

38th=-287