Solve the System of Equations Using Substitution $$\left\{ \begin{array} { l } x ^ { 2 } + y ^ { 2 } = 61 \\x - y = 1\end{array} \right.$$

question 100

Multiple Choice

Solve the system of equations using substitution.
- $$\left\{ \begin{array} { l } x ^ { 2 } + y ^ { 2 } = 61 \\x - y = 1\end{array} \right.$$

• A) \(x = 4 , y = 5 ; x = 5 , y = 4\)
• B) \(x = 4 , y = - 5 ; x = 5 , y = - 4\)
• C) \(x = - 4 , y = - 5 ; x = 5 , y = 4\)
• D) \(x = - 4 , y = 5 ; x = - 5 , y = 4\)

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Definitions:

Qualitative

Pertaining to research or data collection methods that focus on obtaining in-depth understanding of human behavior and the reasons that govern such behavior, rather than quantification.

Social Desirability

A tendency of respondents to answer questions in a manner that will be viewed favorably by others, often leading to overreporting of "good" behavior or underreporting of "bad" behavior.

Reactivity

The degree to which the process of measurement itself affects the measurement and the subject's behavior.