Answer:

Explanation:

1.) x + 2y = 4

2y = -x + 4

(divide both by 2)

2y/2 = -x + 4/2

y = -1/2x - 2 (m = -1/2 , b = -2)

2.) 3x - y = 2

-y = -3x + 2

(divide both by (-) sign)

y = 3x - 2 (m = 3 , b = -2)

3.) -3x + 3y - 1 = 0

3y = 3x + 1 + 0

3y = 3x + 1

(divide both by 3)

3y/3 = 3x + 1/3

y = 1/2x + 1/3 (m = 1/2 , b = 1/3)

4.) 5x - 7y = 2

7y = -5x + 2

(divide both by 7)

7y/7 = -5x + 2/7

y = -5/7x + 2/7 (m = -5/7 , b = 2/7)

5.) 3x + 1/2y = 4

1/2y = -3x + 4

(divide both by 1/2)

1/2y / 1/2 = -3x + 4 / 1/2

"since we are dividing fraction, we can flip its reciprocal. So instead of 1/2, it will become 2/1. Then we multiply"

Therefore:

y = -3x*2/1 + 4*2/1

y = -3x*2 + 4*2

Answer:

y = -6x + 8 (m = -6 , b = 8)