Answer :

luana
First we put y on left side

x+3y=6
3y=-x+6 /:3
y=[tex]- \frac{1}{3}x+2[/tex]

y=ax+b
a is a slope 
so a=[tex]- \frac{1}{3}[/tex]

lana6407
the answer is a= -1/3

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