Jawaban:

1. apakah 4y - 6x = 0

- 6x = 0 - (4y)

- 6x = - 4y

6x = 4y

x = 4y : 6

x = 4y × 1/6

x = 2/3 y

dan 4x + 6y = 2

4x = 2 - (6y)

4x = - 6y + 2

x = ( - 6y + 2) : 4

x = ( - 6y + 2) × 1/4

x = - 6y × 1/4 + 2 × 1/4

x = - 3/2y + 2 × 1/4

x = - 3/2y + 1/2

saling sejajar?

2. apakah y = x + 3

y - x = 3

- x = 3 - y

- x = - y + 3

x = y - 3

dan 3x - 3y = 9

3x - 3y - ( - 3y) = 9 - ( - 3y)

3x = 9 - ( - 3y)

3x = 3y + 9

x = ( 3y + 9) : 3

x = ( 3y + 9) × 1/3

x = 3y × 1/3 + 9 × 1/3

x = 1y + 9 × 1/3

x = y + 9 × 1/3

x = y + 3

saling sejajar?

3. apakah 3x + 4 = y

3x + 4 - y = 0

3x = 0 - 4 + y

3x = y - 4

3x = ( y - 4) : 3

x = ( y - 4) × 1/3

x = 1/3y - 4 × 1/3

x = 1/3y - 4/3

dan - 4y = - x

- 4y + x = 0

- 4y + x - ( - 4y) = 0 - ( - 4y)

x = 0 - ( - 4y)

x = 4y

saling tegak lurus?

4. apakah 2y = 4x

2y - 4x = 0

- 4x = 0 - (2y)

- 4x = - 2y

4x = 2y

x = 2y : 4

x = 2y × 1/4

x = 1/2y

dan 4x + 8y - 8 = 0

4x = 0 - (8y) + 8

4x = - 8 y + 8

x = ( - 8y + 8) : 4

x = ( - 8y + 8) × 1/4

x = - 8y × 1/4 + 8 × 1/4

x = - 2y + 8 × 1/4

x = - 2y + 2

saling tegak lurus?

5. apakah hubungan antara 2y = 2x + 1

2y - 2x = 1

- 2x = 1 - (2y)

- 2x = - 2y + 1

2x = 2y - 1

x = ( 2y - 1) : 2

x = ( 2y - 1) × 1/2

x = 2y × 1/2 - 1/2

x = 1y - 1)2

x = y - 1/2

dan x + 2y = 0?

x = 0 - (2y)

x = - 2y