# SOLUTION: please help me solve this problem use the substitution method to solve the linear system here is the promblem Y=x-4 3x-y=-8 what do you do frist

Algebra ->  Algebra  -> Linear-equations -> SOLUTION: please help me solve this problem use the substitution method to solve the linear system here is the promblem Y=x-4 3x-y=-8 what do you do frist       Log On

 Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Algebra: Linear Equations, Graphs, Slope Solvers Lessons Answers archive Quiz In Depth

 Question 120666: please help me solve this problem use the substitution method to solve the linear system here is the promblem Y=x-4 3x-y=-8 what do you do frist Answer by jim_thompson5910(28476)   (Show Source): You can put this solution on YOUR website!Start with the given system Plug in into the first equation. In other words, replace each with . Notice we've eliminated the variables. So we now have a simple equation with one unknown. Distribute the negative Combine like terms on the left side Subtract 4 from both sides Combine like terms on the right side Divide both sides by 2 to isolate x Divide Now that we know that , we can plug this into to find Substitute for each Simplify So our answer is and which also looks like Notice if we graph the two equations, we can see that their intersection is at . So this verifies our answer. Graph of (red) and (green)