4. (4) (Budget line exercises.) In the following, I recommend that you copy and paste the existing curves, then use your mouse to shrink or extend them. I put a couple of arrows below that you can copy and paste to show the direction of the line shift. Relative to the basic budget line shown, draw in the new requested budget line, just one line in each case. In all cases good x is on the horizontal axis and good y is on the vertical axis. Assume that there are no changes other than those specified. Part d is a little tricky. _..p A" Price of x increases Price of y increases a. y b. [ X x Price of y increases 8:. price of x falls Budget increases, but must be spent on x only c. y d.{ x l/