M8A5:(B) Solve systems of equations algebracally and graphically

(ax+by=c) -ex. -2x+3y=8, for this equation you multiply -3 on both sides, 9x-3y=-15, this will eliminate your threes -2x+3y=8         next you will have 7x=7 divide 7 on both sides 7x=7    your 7s will be eliminated this
           9x-3y=-15                                                                             7    7
will leave you with your first solution x=-1.........next you subsitute in -2(-1)+3y=8, two negatives cancel out so you get 2+3y=8 next you will have 3y+6 divide 3 on both sides and get y=2 your coordinates are (-1,2) when you graph -1 is on your x and 2 is on your y