Solve the System A) $\{ ( - 9,2 ) \}$ B) $\left\{ \left( \frac { 27 } { 10 } , - 9 \right) \right\}$

question 410

Multiple Choice

Solve the system.
- $$\begin{array} { l } \frac { 2 } { x } + \frac { 1 } { y } = \frac { 8 } { 9 } \\\frac { - 2 } { x } - \frac { 7 } { y } = - \frac { 2 } { 9 }\end{array}$$

• A) \(\{ ( - 9,2 ) \}\)
• B) \(\left\{ \left( \frac { 27 } { 10 } , - 9 \right) \right\}\)
• C) \(\{ ( - 2,9 ) \}\)
• D) \(\{ ( 2 , - 9 ) \}\)

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Definitions:

Interaction

In experimental design and statistics, refers to a situation where the effect of one variable depends on the level of another variable.

Factorial Experiment

An experimental setup that investigates the effects of multiple factors by varying them simultaneously and systematically, to analyze their interactions and single effects.

Two-way Factor ANOVA

A statistical test used to determine the effect of two nominal predictor variables on a continuous outcome variable.

Interact

To act in such a way as to have an effect on another; in statistical terms, it often refers to variables that affect each other’s outcomes.