SOLUTION: how to solve a system by substitution? y = -3 and 2x + 8y = -12

Algebra ->  Test  -> Lessons -> SOLUTION: how to solve a system by substitution? y = -3 and 2x + 8y = -12      Log On


   

Question 465409: how to solve a system by substitution?
y = -3 and 2x + 8y = -12
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


The first equation gives you a value for directly. Substitute that value in place of in the second equation and solve the resulting single variable equation in . The solution set is the ordered pair where is the value calculated and is the value given by the first equation.

John

My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism