SOLUTION: Part 1: Decide whether you would use the graphing, substitution, or elimination method to solve the following system of equations. Explain, in complete sentences, why you chose tha

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Part 1: Decide whether you would use the graphing, substitution, or elimination method to solve the following system of equations. Explain, in complete sentences, why you chose tha      Log On


   

Question 474622: Part 1: Decide whether you would use the graphing, substitution, or elimination method to solve the following system of equations. Explain, in complete sentences, why you chose that method.
Part 2: Solve the following system of equations and show all of your work.
2x + 5y = −3
−15x − 5y = −10
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Elimination, because you can add both equations to get a single-variable equation.

-13x = -13, x = 1

Substitute x = 1 into either equation (I'll do the first one) to get something like

2(1) + 5y = -3

2 + 5y = -3

y = -1

Solution is (1,-1).