Solve the System of Equations Using Determinants $$\begin{array} { l } 7 x + 8 y = 4 \\2 x + 3 y = 2\end{array}$$

question 77

Multiple Choice

Solve the system of equations using determinants.
- $$\begin{array} { l } 7 x + 8 y = 4 \\2 x + 3 y = 2\end{array}$$

• A) \(\left( - \frac { 4 } { 5 } , \frac { 6 } { 5 } \right)\)
• B) \(\left( - \frac { 5 } { 4 } , \frac { 5 } { 6 } \right)\)
• C) \(\left( \frac { 6 } { 5 } , - \frac { 4 } { 5 } \right)\)
• D) \(\left( \frac { 28 } { 37 } , \frac { 22 } { 37 } \right)\)

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Definitions:

Time-Series Design

A research method that involves repeated observations of the same variables over a period of time, often used to assess the impact of interventions.

Ideographic Research

A research approach focusing on understanding the unique aspects of individual cases or entities, rather than seeking to generalize findings across populations.

Outcome Evaluation

The assessment of the results of a program or intervention, measuring its effectiveness in achieving specified goals.

Single-Subject Design

A research design that focuses on the response of a single subject to a treatment or intervention, emphasizing the collection and analysis of data over time.