Solve the Problem $x$ Is Twice $y$ , And $z$ Is Two Less Than

question 271

Multiple Choice

Solve the problem.
-If $x$ is twice $y$ , and $z$ is two less than $x$ , write $z$ as a function of $y$ .

• A) \(\mathrm { z } ( y ) = 2 y - 2\)
• B) \(z ( y ) = 2 - 2 y\)
• C) \(\mathrm { z } ( y ) = 2 ( y - 2 )\)
• D) \(\mathrm { z } ( y ) = 2 ( 2 - y )\)

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Definitions:

Positive To Negative

Refers to the flow of conventional electric current from a point of higher potential (positive) to a point of lower potential (negative).

Negative To Positive

Describes the direction of flow of electrons in an electrical circuit, from a more negative point to a more positive point.

Lightning Protection

Systems or devices designed to protect structures and equipment from damage by directing lightning surges safely to the ground.

Grounded

Refers to a direct physical connection to the earth in an electrical system, used for safety and stability of the system.