Solve Each System by Using Either the Substitution or the Elimination-By-Addition

question 395

Short Answer

Solve each system by using either the substitution or the elimination-by-addition method, whichever seems more appropriate. $$\left( \begin{array} { c } 6 x - 9 y = 27 \\- 6 x + 2 y = - 6\end{array} \right)$$

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Definitions:

Subjects

Participants in a research study.

Arms Control

Measures aimed at controlling the development, testing, deployment, and proliferation of weapons, especially nuclear weapons, to reduce the potential for armed conflict and promote international security.

Pros and Cons

The advantages and disadvantages of a particular decision, course of action, or situation, considered to help make a more informed decision.

Groupthink

A psychological phenomenon occurring within a group of people, in which the desire for harmony or conformity results in an irrational or dysfunctional decision-making outcome.