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Test Review

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Test Review

Moving Straight

Ahead

Investigations 1 & 3

LINEAR RELATIONSHIP?

YES OR NO



A = 5 + 0.50d

LINEAR RELATIONSHIP?

YES OR NO



T = 50 ÷ R

LINEAR RELATIONSHIP?

YES OR NO

• A shipping company charges

$10 to ship any size package,

plus an additional $4 per pound

that it weighs

LINEAR RELATIONSHIP?

YES OR NO



Miles 0 1 2 3 4 5



Cost 5 5 5 5 5 5

LINEAR RELATIONSHIP?

YES OR NO



x 0 1 2 3 4 5

y -10 -5 0 5 10 15

LINEAR RELATIONSHIP?

YES OR NO

X Y

0 5

2 7

4 10

8 14

10 19

LINEAR RELATIONSHIP?

YES OR NO

X Y

-3 -6

-2 -12

-1 -18

0 -24

1 -30

LINEAR RELATIONSHIP?

YES OR NO

LINEAR RELATIONSHIP?

YES OR NO

LINEAR RELATIONSHIP?

YES OR NO

WRITE AN EQUATION

Use H for hours and C for total charge.

1.An electrician charges $100 per hour.

C= 100H

2. A plumber charges $75 for a house call plus

$20 per hour.

C= 75 + 20H

3. A carpenter charges $350 for a job, no matter

how long it takes.

C= 350

WHICH EQUATION?

A

X Y y = 5 + 1x

1 5 B

2 8

y = 3x + 2

3 11

C

4 14

5 17 y = 2x + 3

WHICH EQUATION?

A

X Y y = 3 + 5x

-4 -7 B

0 5

y = 5 + 3x

4 17

C

8 29

12 41 y = 4 + 5x

WHICH EQUATION?

A company A

charges a $50 y = 50x + 4

set up fee for a T-

shirt logo, and B

$4.00 per T-shirt. y = 4x + 50

Let x= number T-shirts

and C

y = amount of money

y = 54x

WHICH EQUATION?

A

y = 4x + 1

B

y = -1/2x + 4

C

y = -2x + 4 y = 2x + 4

WHICH EQUATION?

A

y = 2x + -1

B

y = -1x + -1

C

y = 2x + -2 y = 2x + 1

WHICH EQUATION?

A

y = 6x

B

y=6

C

y=x+6

SOLVE

3x + 9 18 CHECK

3 (3) + 9 = 18

3x + 9 – 9 18 – 9

9 + 9 = 18

3x 9

18 = 18

3x / 3 9/3



1x 3

SOLVE

4x + 2 10x CHECK

4( 1/3) + 2 = 10 (1/3)

4x + 2 - 4x 10x – 4x

4/3 + 2 = 10/3

2 6x

4/3 + 6/3 = 10/3

2/6 6x / 6

10/3 = 10/3

1/3 1x

SOLVE

-2x + 6 24 CHECK

-2 (-9) + 6 = 24

-2x + 6 – 6 24 – 6

18 + 6 = 24

-2x 18

24 = 24

-2x / -2 18 / -2

x -9

SOLVE

2x + 7 5x – 11 CHECK

2(6) + 7 = 5(6) –11

2x + 7 – 2x 5x – 11 – 2x

12 + 7 = 30 – 11

7 3x – 11

19 = 19

7 + 11 3x – 11 + 11

18 3x

18 / 3 3x / 3



6 1x

SOLVE

3x – 11 10x – 4 CHECK

3 (-1) – 11= 10 (-1) - 4

3x – 11 – 3x 10x – 4 – 3x



-11 7x – 4 -3 – 11 = -10 - 4



-11 + 4 7x – 4 + 4 -14 = -14



-7 7x



-7 / 7 7x / 7

-1 1x

SOLVE

3(x + 2) 12 CHECK

3(2 + 2) = 12

3x + 6 12

3 (4) = 12

3x + 6 – 6 12 – 6

12 = 12

3x 6



3x / 3 6/3

1x 2



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