1. Direct Variation Chapter 5 Section 2

2. Objective  Students will write and graph an equation of a direct variation.

3. Direct Variation  A relationship that can be represented by the function in the form y = kx where k does not equal 0  A relationship where the independent variable is effected only by slope (y-intercept is 0)  A relationship that can be represented by the function in the form y = kx where k does not equal 0  A relationship where the independent variable is effected only by slope (y-intercept is 0)

4. Constant of variation  It is represented by K  It will be the coefficient of the independent variable.  It is represented by K  It will be the coefficient of the independent variable.

5. Turn to page 301…  Look at Problem 1, Problem 2 and Problem 3

6. Graph of Direct Variation  The graph of a direct variation equation is a line with the following properties  The line passes through (0,0)  The slope of the line is k  The graph of a direct variation equation is a line with the following properties  The line passes through (0,0)  The slope of the line is k

7. On Page 304…  Try problems #1-8.