Solve the System by the Addition Method $$\left\{ \begin{array} { l } 4 x = 8 y + 9 \\4 x = 8 y - 4\end{array} \right.$$

question 86

Multiple Choice

Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set
notation to express the solution set.
- $$\left\{ \begin{array} { l } 4 x = 8 y + 9 \\4 x = 8 y - 4\end{array} \right.$$

• A) \(\left\{ \left( \frac { 1 } { 8 } , \frac { 1 } { 16 } \right) \right\}\)
• B) no solution; \(\varnothing\)
• C) \(\left\{ \left( 0 , - \frac { 9 } { 8 } \right) \right\}\)
• D) \(\{ ( 8,9 ) \}\)

---

Definitions:

Bloodstream

The flowing body fluid that circulates throughout the body via the heart and blood vessels, carrying oxygen and nutrients to tissues and removing waste.

Active Transport

The energy-dependent process of moving molecules across a cell membrane against their concentration gradient, typically involving specific transport proteins.

Energy

The capacity to do work or cause physical change; energy can exist in a variety of forms, such as electrical, chemical, mechanical, and thermal.

Concentration

A measure of the amount of a given substance contained per unit of volume.