Solve the System of Equations by the Elimination Method $- 0.8 x + 0.4 y = 4.8$

question 49

Multiple Choice

Solve the system of equations by the elimination method.
- $- 0.8 x + 0.4 y = 4.8$ $0.1 x - 0.1 y = - 0.7$

• A) \(( - 50,20 )\)
• B) \(( - 0.5,0.2 )\)
• C) \(( - 5,2 )\)
• D) \(( 2 , - 5 )\)

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Definitions:

3*IQR

A statistical range calculated as three times the interquartile range (IQR), used to identify outliers by delineating the boundaries beyond which data points are considered exceptional.

Statistically Significant

A determination that the results observed in data are unlikely to have occurred by chance alone, according to a predefined significance level.

Box-and-Whisker Plot

A type of chart that displays the distribution of data based on quartiles, highlighting the median, and extremes.

Whiskers

In a box plot, the lines that extend from the upper and lower quartiles to the maximum and minimum values, respectively, indicating variability outside the upper and lower quartiles.