Solve the System of Equations Using the Addition Method $$\begin{aligned}2 x + 8 y & = - 42 \\12 x + 2 y & = 70\end{aligned}$$

question 30

Multiple Choice

Solve the system of equations using the addition method.
- $$\begin{aligned}2 x + 8 y & = - 42 \\12 x + 2 y & = 70\end{aligned}$$

• A)(-2, 7)
• B)(12, -12)
• C)(-7, 7)
• D)(7, -7)

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Definitions:

Empirical

Based on observation or experience rather than theory or pure logic.

Type II Error

In research, the mistake of thinking that one variable does not have an effect on or relationship with another, when really it does.

Empirical Method

A way of gaining knowledge by means of direct and indirect observation or experience.

Type I Error

In research, the mistake of thinking that one variable has an effect on, or relationship with, another variable, when really it does not.