just plot the points on the graph so if x+y=-6 just make a list of all of the points that will work (remember that the left-to-right line is x and the up-to-down line is y, and right and up is positive and left and down is negative)
so make a list (in graphs we write [x,y] or (x,3)) so here are some points that will work (-3,-3) (-4,-2) (-2,-4) (-1,-5) (-5,-1) (0,-6) (-6,0) (-7,1) (1,-7) and so on, just plot those points and more that will work for x+y=-6 and you should be good,
there is another way that this is supposed to be done but this way is easier
To graph x + y = − 6 , rearrange it to y = − x − 6 and find points by choosing values for x . Plot these points on the graph and draw a straight line through them. This line represents all possible solutions to the equation.
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