Find the Solution to the System of Equations by Substitution

question 91

Multiple Choice

Find the solution to the system of equations by substitution.
-x + y = 0 2x + 3y = -7

• A) (-7, 7)
• B) (6, -6)
• C) (-6, 6)
• D) (7, -7)

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Definitions:

Wilcoxon Rank Sum Test

A nonparametric test that compares two unrelated samples to determine if there is a difference in their central tendency.

Sign Test

A nonparametric method utilized to identify if a median variance exists between paired data points.

Wilcoxon Signed-Rank Test

A nonparametric statistical hypothesis test used to compare two related samples, matched samples, or repeated measurements on a single sample to assess whether their population mean ranks differ.

Matched Paired

A study design in which subjects are paired based on certain criteria, with each pair receiving different treatments for comparison of the effects.