An economic consultant for X Corp. recently provided the rm's market-

ing manager with this estimate of the demand function for the rm's product:

Qd

x = 98 4Px + 6Py 1M

where Qd

x represents the amount consumed of good X, Px is the price of good X, Py

is the price of good Y , and M is income. Suppose good Y sells for $2 per unit and

consumer income is $10.

(a) Are goods X and Y substitutes or complements?

(b) Is good X a normal or an inferior good?

(c) Write the algebraic form of the demand curve