Answer:
The equetion will be
[tex]y = - 2x - 12[/tex]
by the general formula of
[tex]y = mx + b[/tex]
the m is given and we want to find b by inverting x, m and y values
[tex] - 6 = - 2( - 3) + b[/tex]
when you finally solve this equetion then you will get the value of b as
[tex] b = - 12[/tex]
so you will substitute m and b values then you will get the exact equetion of the graph .
Hope it help but it will be more helpful if u give me brainlist.