Direct Joint and Inverse Variation Algebra 2 8

Direct, Joint, and Inverse Variation Algebra 2 8 -1

• Activity • Groups of 1 to 3 • Complete the handout • Supplies – Graph Paper – Scissors – Glue Sticks – Rulers Graphing Inverse Variation

Activity

• Cut up the graph paper (in rectangles of 30) and paste onto a graph lower left corner in the origin • Connect the upper right corners into a graph, draw the line • Complete the questions on the form • #3 is to create another graph of 48 units • Skip #6 Activity

7. 5 12 Activity

20 3. 2 9. 6 5 Activity

• Direct Variation Function – A function that can be modeled with the equation y = kx. • Inverse Variation Function – A function that can be modeled with the equation y = k/x, also xy = k; where k does not equal zero. Vocabulary - Review

Inverse Variation - Example

Inverse Variation - Practice

Inverse Variation - Example

Inverse Variation - Practice

• Combined Variation – When one quantity varies with respect to two or more variables. Vocabulary - New

Inverse Variation - Example

Inverse Variation - Example

• Reciprocal Function – The parent function of the inverse variation family of curves f(x) = 1/x. Vocabulary - Review

Practice Problems

Practice Problems

Practice Problems

Practice Problems

Practice Problems

• Pages 573 – 576 • 10, 13 – 15, 23, 25, 32 – 36, 40, 49 Homework