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

question 231

Short Answer

Solve each system by using either the substitution or the elimination-by-addition method, whichever seems more appropriate. $$\left( \begin{array} { c } 5 x - y = 8 \\6 x + 9 y = 1\end{array} \right)$$

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Definitions:

Economic Crises

Periods of significant decline in economic activity spread across the economy, lasting more than a few months, and are normally visible in real GDP, real income, employment, industrial production.

Environmental-protection Legislation

Laws and regulations enacted by governments to regulate activities that cause environmental degradation, and to protect natural resources and ecosystems.

Money Supply

The total amount of monetary assets available in an economy at a specific time, including cash, bank deposits, and other liquid assets.

Inflation Rate

The speed at which the overall price level for goods and services increases, leading to a decrease in buying power.