A1.A-REI.C.5

Code Standard Coding: 
A1.A-REI.C.5
Code Standard standard: 

Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions.

Code Standard Domain: 
Reasoning with Equations and Inequalities (A-REI)
Code Standard Cluster: 
A1.A-REI.C Solve systems of equations.
Code Standard Conceptual Category: 
Algebra - A
Code Standard Course: 
Algebra 1
Is this Mathematics?: 
yes
Is this ELA?: 
no