Principles of Macroeconomics / Unit 18 MAC 1721 short lesson, about 20 seconds
Movement Along Against a Shift
Captions available
The idea
A change in the variable on the axis moves you along a curve. A change in anything else moves the curve. This one distinction decides more exam questions than any other in the course.
In practice
It applies to every curve in every model the course built.
Where people slip
A curve's own price never shifts it, in any market.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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