Solve the System of Equations $$\begin{array} { l } x - y + z = - 7 \\x + y + z = 1 \\x + y - z = 9\end{array}$$

question 60

Multiple Choice

Solve the system of equations.
- $$\begin{array} { l } x - y + z = - 7 \\x + y + z = 1 \\x + y - z = 9\end{array}$$

• A) \(\{ ( 1 , - 4,4 ) \}\)
• B) \(\{ ( 4 , - 4,1 ) \}\)
• C) \(\{ ( - 4,1,4 ) \}\)
• D) \(\{ ( 1,4 , - 4 ) \}\)

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Definitions:

Cornea

The clear front section of the eye, encompassing the iris, pupil, and front chamber, which plays a primary role in concentrating the majority of light entering the eye.

Retina

A thin layer of tissue at the back of the eye that contains cells sensitive to light, which convert light into neural signals for visual recognition.

Visual Receptors

Cells in the eye, specifically rods and cones, that respond to light and enable vision.

Sclera

The white outer layer of the eyeball that, along with other structures, protects the eye and helps maintain its shape.