1. indifference curves are convex to the origin because of: a. transitivity of consumer preferences. b. they yield results consistent with observed behavior. c. the assumption that more is preferred to less. d. the assumption of completeness. e. none of the above.

2. an individual consumes only two goods, X and Y. which of the following expressions represents the utility-maximizing market basket? a. the slope of the utility function is zero. b. Px/Py= money income c. the slope of the indifference curve= money income. d. the slope of the indifference curve=Px/Py e. all of the above.

please explain why, thank you so much!