My income rose and the price of good y rose also.That means that my demand curve for good X shifted right.

Question

Quizplus · Accepted Answer

If good y is a substitute for good x, then an increase in the price of y will lead consumers to buy more of x, as it has become relatively cheaper in comparison. This is because the two goods can be used interchangeably to satisfy the same need.
Similarly, if good x is a normal good, then an increase in income will lead to an increase in demand for x as people have more money to spend. 
Thus, if y is a substitute for x and x is a normal good, an increase in income and price of y will cause a shift in demand towards x, leading to a rightward shift in the demand curve for good x.

My Income Rose and the Price of Good Y Rose