Need help ASAP with economics! fill in the blank!?

Question

The relationship between the price of an item and the resulting quantity that will be demanded is _________. One reason for this relationship is that as the price of an item rises, the consumer's real income will fall thereby affecting his ___________to make the purchase. This phenomenon is known as the ____________ effect. Another reason for this relationship is that when the price of an item rises, the _____________will also rise, making the consumer less _____________to make the purchase. This phenomenon is known as the ________________ effect.

Answer 1

1. the law of demand

2. ability

3. income

4. economic cost

5. willing

6. substitution

Answer 2

law of demand

ability (?)

income

opportunity cost

willing (?)

substitution