Discuss the shape of the indifference curve for each of the following pairs of goods. Explain the

Question:

Discuss the shape of the indifference curve for each of the following pairs of goods. Explain the relationship between the shape of the indifference curve and the marginal rate of substitution as the quantities of the two goods change.
• Orange juice and smoothies
• Baseballs and baseball bats
• Left running shoe and right running shoe
• Eyeglasses and contact lenses