Chapter 3 Review

13/9

(-2, -5) and (7,8)

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(-7, 8) and (-7, 5)

-1

(-9, -3) & (-7, -5)

-1/7

(15, 2) and (-6, 5)

1/5

(3, 9) and (-2, 8)

0

(5, 9) and (3, 9)

2

(6, -2) and (5, -4)

-7

(6, 3) and (7, -4)

-4

(7, -4) and (4, 8)

x-int: (6, 0) y-int: (0, 4)

2x + 3y = 12

x-int: (3, 0) y-int: (0, 2)

2x + 3y = 6

x-int: (6, 0) y-int: (0, 3)

2x + 4y = 12

x-int: (5, 0) y-int: (0, 2)

2x + 5y = 10

x-int: (3, 0) y-int: (0, 6)

2x + y = 6

x-int: (2, 0) y-int: (0, -2)

2x - 2y = 4

x-int: (5, 0) y-int: (0, -2)

2x - 5y = 10

x-int: (2, 0) y-int: (0, -4)

2x - y = 4

x-int: (10, 0) y-int: (0, 3)

3x + 10y = 30

x-int: (-4, 0) y-int: (0, -3)

3x + 4y = -12

x-int: (4, 0) y-int: (0, 3)

3x + 4y = 12

x-int: (5, 0) y-int: (0, 3)

3x + 5y = 15

x-int: (-3, 0) y-int: (0, -9)

3x + y = -9

x-int: (2, 0) y-int: (0, 6)

3x + y = 6

x-int: (-4, 0) y-int: (0, 3)

3x - 4y = -12

x-int: (4, 0) y-int: (0, -3)

3x - 4y = 12

x-int: (-3, 0) y-int: (0, 9)

3x - y = -9

x-int: (2, 0) y-int: (0, -6)

3x - y = 6

x-int: (5, 0) y-int: (0, 4)

4x + 5y = 20

x-int: (7, 0) y-int: (0, 4)

4x + 7y = 28

x-int: (2, 0) y-int: (0, 8)

4x + y = 8

x-int: (2, 0) y-int: (0, -8)

4x - y = 8

x-int: (6, 0) y-int: (0, 5)

5x + 6y = 30

x-int: (1, 0) y-int: (0, 5)

5x + y = 5

x-int: (6, 0) y-int: (0, -5)

5x - 6y = 30

x-int: (2, 0) y-int: (0, 4)

6x + 3y = 12

x-int: (1, 0) y-int: (0, 6)

6x + y = 6

no, no common difference

Determine whether the sequence is an arithmetic sequence. If yes, state the common difference. -1.2, 0.6, 1.8, 3.0, ...

no, no common difference

Determine whether the sequence is an arithmetic sequence. If yes, state the common difference. -2.2, -1.1, 0.1, 1.3, ...

yes, d = 17

Determine whether the sequence is an arithmetic sequence. If yes, state the common difference. -5, 12, 29, 46, ...

no, no common difference

Determine whether the sequence is an arithmetic sequence. If yes, state the common difference. 1, 4, 9, 16, ...

yes, d = -8

Determine whether the sequence is an arithmetic sequence. If yes, state the common difference. 21, 13, 5, -3, . . .

yes, d = 7

Determine whether the sequence is an arithmetic sequence. If yes, state the common difference. 9, 16, 23, 30, ...

a22 = 58

Find the 22nd term of the sequence: -5, -2, 1, 4, 7, ...

a22 = 190

Find the 22nd term of the sequence: 1, 10, 19, 28, ...

a22 = -50

Find the 22nd term of the sequence: 13, 10, 7, 4, ...

18, 25, 32

Find the next three terms of the arithmetic sequence: -10, -3, 4, 11, ...

7, 21, 35

Find the next three terms of the arithmetic sequence: -49, -35, -21, -7, ...

7, 10, 13

Find the next three terms of the arithmetic sequence: -5, -2, 1, 4, ...

4, 2, 0

Find the next three terms of the arithmetic sequence: 12, 10, 8, 6, ...

-8, -13, -18

Find the next three terms of the arithmetic sequence: 12, 7, 2, -3, ...

-1/4, -1/2, -3/4

Find the next three terms of the arithmetic sequence: 3/4, 1/2, 1/4, 0, ...

58, 52, 46

Find the next three terms of the arithmetic sequence: 82, 76, 70, 64, ...

yes, k = 1/2

Is y = (1/2)x a direct variation?

yes, k = -3

Is y = -3x a direct variation?

no

Is y = 2x - 1 a direct variation?

yes, k = 2

Is y = 2x a direct variation?

no

Is y = 3 a direct variation?

no

Is y = x + 2 a direct variation?

No

Is y = x - 1 a direct variation?

yes, k = 1

Is y = x a direct variation?

y = -2x, 12

Write the equation and solve: If y = -4 when x = 2, find y when x = -6.

y = -3x, 15

Write the equation and solve: If y = -9 when x = 3, find y when x = -5.

y = (2/3)x, -24

Write the equation and solve: If y = 12 when x = 18, find x when y = -16.

y = (1/4)x, 3/2

Write the equation and solve: If y = 4 when x = 16, find y when x = 6.

y = 3x, 5

Write the equation and solve: If y = 45 when x = 15, find x when y = 15.

y = 4x, 8

Write the equation and solve: If y= -8 when x = -2, find x when y = 32.

an = 3n - 8

Write the equation for the arithmetic sequence: -5, -2, 1, 4, ...

an = -3n + 16

Write the equation for the arithmetic sequence: 13, 10, 7, 4, ...

an = 12n + 7

Write the equation for the arithmetic sequence: 19, 31, 43, 55...

an = 2n + 3

Write the equation for the arithmetic sequence: 5, 7, 9, 11, 13, ...

an = 4n + 5

Write the equation for the arithmetic sequence: 9, 13, 17, 21, ...

an = 9n - 8

Write the equation for the arithmetic sequence:1, 10, 19, 28, ...

x-int: (4, 0) y-int: (0, 2)

x + 2y = 4

x-int: (8, 0) y-int: (0, 2)

x + 4y = 8

x-int: (-1, 0) y-int: (0, -1)

x + y = -1

x-int: (1, 0) y-int: (0, 1)

x + y = 1

x-int: (2, 0) y-int: (0, 2)

x + y = 2

x-int: (3, 0) y-int: (0, 3)

x + y = 3

x-int: (5, 0) y-int: (0, 5)

x + y = 5

x-int: (6, 0) y-int: (0, 6)

x + y = 6

x-int: (7, 0) y-int: (0, 7)

x + y = 7

x-int: (8, 0) y-int: (0, 8)

x + y = 8

x-int: (9, 0) y-int: (0, 9)

x + y = 9

x-int: (4, 0) y-int: (0, -2)

x - 2y = 4

x-int: (1, 0) y-int: (0, -1)

x - y = 1

x-int: (2, 0) y-int: (0, -2)

x - y = 2

x-int: (3, 0) y-int: (0, -3)

x - y = 3

x-int: (5, 0) y-int: (0, -5)

x - y = 5