Wat is de richtingcoëfficiënt van lijn m: x+3y=6????????

"What is the slope of line m??"

x + 3y = 6   rearrange as

3y = - x + 6           divide both sides by 3

y  = -x/3 + 2

y = (-1/3)x +  2      so.....the slope is -1/3