Lesson 5: constant rate of change and direct variation
words to know
Linear Relationship: a straight line graph
Constant Rate of Change: rates of change between any two points are the same
Direct variation: when the ratio of two variable quantities is constant
Constant of Variation: y=kx, where k is the constant value
Constant Rate of Change: rates of change between any two points are the same
Direct variation: when the ratio of two variable quantities is constant
Constant of Variation: y=kx, where k is the constant value
examples
Tips
proportional relationship graphs and constant variation graphs always go through the origin
Extra examples
Click here for additional examples and self check quizzes
problems of the day
1. Write a constant of variation equation relating number of shows watched to hours watching tv if you watch 3 shows in 1.5 hours.
2. How many shows will you watch in 3 hours?
2. How many shows will you watch in 3 hours?