e can derive an Engel curve by repeatedly changing the consumer's income, _____________ Group of answer choices shifting the budget constraint then mapping out the new optimal quantities of x and y consumed. Finally, on a separate graph, map out the optimal quantity of x and optimal quantity of y consumed. shifting the budget constraint then mapping out the new optimal quantities of x and y consumed. Finally, on a separate graph, map out income and optimal quantity of x consumed. rotating the budget constraint then mapping out the new optimal quantities of x and y consumed. Finally, on a separate graph, map out the optimal quantity of x and optimal quantity of y consumed. rotating the budget constraint then mapping out the new optimal quantities of x and y consumed. Finally, on a separate graph, map out the price of x and optimal quantity of x consumed