Solve the following system #3y + x = -3# and #-6y + x = -12# using the graphing method?
Since both of the given equations a linear we only need 2 points for each equation to draw their lines and it is most convenient to use the axis intercept points
On graph paper draw a straight line through both
and another straight line through both
We can then read the point of intersection of the two lines from the graph as