Solve the System by the Addition Method $$\begin{array} { l } 4 x + 6 y = - 42 \\2 x - 4 y = 0\end{array}$$

question 121

Multiple Choice

Solve the system by the addition method.
- $$\begin{array} { l } 4 x + 6 y = - 42 \\2 x - 4 y = 0\end{array}$$
$2 x - 4 y = 0$

• A) \(\{ ( - 6 , - 2 ) \}\)
• B) \(\{ ( - 7 , - 2 ) \}\)
• C) \(\{ ( - 6 , - 3 ) \}\)
• D) \(\varnothing\)

---

Definitions:

Gastrulation

An early embryonic process in which the single-layered blastula is reorganized into a multilayered structure known as the gastrula, forming the basic body plan.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the outer layer of skin, nails, hair, and nervous system.

Epiblast

A layer of cells in the early embryo from which all the various tissues and organs of the body will eventually develop.

Neural Plate

An early embryonic structure that gives rise to the central nervous system, including the brain and spinal cord, through the process of neurulation.