When Income Increases, the Demand Curve for X Shifts Rightward

question 168

Multiple Choice

When income increases, the demand curve for X shifts rightward and the demand curve for Y shifts leftward. These shifts mean that

• A) X and Y are complements.
• B) X and Y both normal goods.
• C) X is an inferior good and Y is a normal good.
• D) X is a normal good and Y is an inferior good.

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Definitions:

Tummy Tucks

A cosmetic surgical procedure, also known as abdominoplasty, that removes excess skin and fat from the abdomen and tightens the abdominal muscles.

Stomach Contractions

The rhythmic contractions of the stomach muscles that mix and propel food through the digestive system.

Erector Spinae

A group of muscles running vertically along the spine that maintain posture and help in the movement of the spine.

Longissimus Capitis

A muscle in the human body, part of the erector spinae muscle group, that extends along the spine and is responsible for head, neck, and spinal movements.