8.1.1 Variation Functions (continued) Example 4 Writing and Graphing Inverse Variation If y varies inversely as x , then the relationship between x and y , called an inverse variation, can be described by an equation of the form y = k / x , where k ≠ 0, x ≠ 0, and k is the constant of variation.
159
Made with FlippingBook - Share PDF online