-Refer to Figure 5

question 49

Multiple Choice

-Refer to Figure 5.7.As the price of W increased,the demand for Y shifted from to .The cross-price elasticity of demand between W and Y is:

• A)positive.
• B)negative.
• C)zero.
• D)indeterminate from this information.

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Definitions:

Principal Square Root

The non-negative square root of a number, denoted as √x for a non-negative number x.

Real Roots

Real roots are the values of the variable that satisfy an equation, where the solutions are real numbers.

Calculator

An electronic or mechanical device used to perform mathematical operations.

Irrational

A term describing a number that cannot be expressed as a ratio of two integers; its decimal representation does not terminate or repeat.