An increase in the price of good X will have what effect on the budget line on a normal X-Y graph?

A parallel outward shift of the line

An increase in the vertical intercept

A decrease in the horizontal intercept

A parallel inward shift of the line

THEN IF : When the price of one good decreases, the associated substitution effect is represented by a:

move from one indifference to a higher indifference curve since real income is now higher.

move from one indifference to a lower indifference curve since real income is now lower.

move along a given indifference curve holding real income constant.

move along a given indifference curve since real income increases.