If a decrease in the price of good Y causes the demand for good Z ...

[penguins]

If a decrease in the price of good Y causes the demand for good Z to decrease, this indicates that:
 a. Y and Z are complements.
  b. Y and Z are substitutes.
  c. Y and Z are unrelated.
  d. Y is a normal good and Z is an inferior good.

Question 2

If the price of coffee decreases, the demand curve for tea (a substitute good) will:
 a. remain unchanged. b. shift to the right.
  c. shift to the left. d. do none of these

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Answer to Question 1

b

Answer to Question 2

c

[penguins]

Wow, this really help

[flexer1n1]

Thanks for the timely response, appreciate it