The trigger decides
The trigger decides
A movement along a curve occurs when the good's own price changes. The market moves between two points on the same demand or supply curve. For supply, a rise in price from P1P_1P1 to P2P_2P2 causes an extension in quantity supplied from Q1Q_1Q1 to Q2Q_2Q2.
Step-by-step lessons on CIE Intl A Level Economics 2.1.7 distinction between the shift in the demand or supply curve and the movement along these curves. Each one builds up to exam-style questions.