Answer:
y = -
x +

Explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Rearrange 6x + 12y = 9 into this form
Subtract 6x from both sides
12y = - 6x + 9 ( divide all terms by 12 )
y = -
x +
, that is
y = -
x +