Exhibit 19-4 ​

question 180

Multiple Choice

Exhibit 19-4
​

-Refer to Exhibit 19-4. As a consequence of the depicted change in the supply of X, the demand curve for Y shifted from D₁ to D₂. It follows that

• A)X and Y are substitutes.
• B)X and Y are complements.
• C)X and Y are inferior goods.
• D)demand for Y is price elastic.

---

Definitions:

Spells Of Unemployment

Periods during which an individual is unemployed or out of work but actively seeking employment.

Master Control Relay

A relay used to control the operation of multiple circuits or functions in a control system, often serving as a main safety or operating control.

Hardwired

The physical interconnection of electric and electronic components with wire.

Label Instruction

A programmable logic controller instruction that assigns an alphanumeric designation to a particular location in a program. This location is used as the target of a jump, skip, or jump to subroutine instruction.