Suppose a linear demand function is estimated for good x as, Qd = 100 – 4*Px + 6*Py + M. where Px = $4, Py = $2, and M =10. M is the average income of consumers, measured in thousands of dollars. What is the price elasticity of good x?

Suppose a linear demand function is estimated for good x as, Qd = 100 – 4*Px + 6*Py + M. where Px = $4, Py = $2, and M =10. M is the average income of consumers, measured in thousands of dollars. What is the cross-price elasticity of good x with respect to the price of good y