Chapter 2: Section 2 Notes
By the end of the section, you should be able to:
- Students will be able to solve for the constant of variation (k) or an unknown value (x or y) in direct variation equations (y = kx).
- Students will be able to interpret if a function is direct variation from a table or a graph.
Definitions:
Identifying Direct Variation from Tables
Things/Steps to Remember:
- To be direct variation the ratio x/y of all x ,y value pairs must equal the same constant.
Identifying Direct Variation from Equations
Things/Steps to Remember:
- For an equation to be a direct variation it must exactly match the form: y = kx
Using proportions to solve direct variation problems
🎥Example 5&6 **For Example 6 I misspokee, 200/50 = 4 not 40 as I said in the video**
Things/Steps to Remember:
- Remember the ratio is the same for all pairs in a direct variation.
- First find k, then use k to find x or y.
Graphing Direct Variation Equations
A2 Section 2.2 Worksheet |
A2 Section 2.2 WS ANSWERS |
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