x + 2y = 6
2y = -x + 6
y = -1/2 x + 3 this line has slope = -1/2
parallel lines have same slope so new line also has slope = -1/2
passing thru (-4, 3)
y = mx + b
b = y - mx
b = 3 - (-1/2)(-4)
b = 3 - 2
b = 1
equation
y = -1/2 x + 1
answer
B. y= -1/2 x+1