Equations of Linear Relations Lesson #7

Slope as a  Rate of Change

 

Case 1. Distance and time graph

a rate of change is a change in distance divided by a change in time.

 

Case 2. Temperature and time graph

a rate of change is a change in temperature divided by a change in time.

 

Case 3. Amount of fuel and distance travelled graph.

a rate of change is a change in the amount of fuel divided by a change in distance travelled.

 

Q. Taehyung is taking part in a long distance car race. After 4hours he had travelled 300km, and after 6hours he had travelled 480km.

Calculate his average speed.

A. 90km/h