Solve the System by Using Any Method $$\begin{array} { l } 5 x + y = - 5 \\- 15 x - 3 y = 9\end{array}$$

question 32

Multiple Choice

Solve the system by using any method. If a system does not have one unique solution, state whether the
system is inconsistent or whether the equations are dependent.
- $$\begin{array} { l } 5 x + y = - 5 \\- 15 x - 3 y = 9\end{array}$$

• A) { } ; The system is inconsistent.
• B) \(\{ ( 1 , - 10 ) \}\)
• C) \(\{ ( x , y ) \mid 5 x + y = - 5 \}\); The equations are dependent.
• D) \(\{ ( 0 , - 5 ) \}\)

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Definitions:

Prospective Cohort

A study that follows a group of similar individuals over time to determine how their exposures affect their outcomes.

Cross-sectional

A study method that observes and analyzes data from either an entire population or a selected representative segment at a particular moment.

Longitudinal

Relating to research or study that involves repeated observations of the same subjects over a period, often years or decades.

Time-lagged

Referring to studies or analyses that consider the delay between the occurrence of one event and the observation of its effects.