Answer:
(1) y = - 2x - 2
(2) y = 1/3x + 6
Explanation:
(Picture 1)
y = mx + b
The line cuts the y axis at -2, meaning b = -2
When y increase s by 1, x decreases by 2, meaning mx = -2x
That makes y = - 2x - 2
(Picture 2)
The line cuts the y axis at 6, meaning b = 6
When y increases by 1, x increases by 3, meaning mx = x/3 or 1/3x
That makes y = 1/3x + 6