The demand curve is given by QD= 500 - 5PX + 0.51 + 10PY - 2PZ.
What is the equation of the demand curve if consumer incomes are $30,000, the price of good Y is $10, and the price of good Z is $20?
Graph the demand curve that your found above, shown intercepts and slop.
If the price of good X is $15, what is the quantity demanded? Show this point on the demand curve.
Suppose the price of good Y rises to $15. Graph the new demand curve.