Dr. Fraser covers Direct Variation in this lesson beginning with an overview of the Constant Variation and relating the concept to real world examples. Then, you will learn about graphing direct variations and applications. Four comprehensive video examples reinforce the concepts you just learned.
A direct variation
is given by an equation of the form y = kx, where k is a nonzero
constant, called the constant of variation.
The graph of a
direct variation is a straight line with slope k and passing through
You can solve
problems involving direct variation when you are given values
satisfied by the direct variation and asked to find a missing value.
First, use the given values to find k. Then use k to find the
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.