1. Slope and Direct Variation Today, you will need: A calculator Homework that is due today.

2. What is a Direct Variation? This IS a Direct Variation This is NOT a Direct Variation

3. More comparisons… This IS a Direct VariationThis is NOT a Direct Variation

4. Compare from a Table x0246 y0369 x0369 y5101520 This IS a Direct Variation This is NOT a Direct Variation

5. Compare from Word Problems This IS a direct variation A hot air balloon ascends from the ground at a rate of 60 feet per minute. How high is the balloon at 5 minutes? This IS NOT a direct variation A rock is dropped from a bridge into a river that is 100 feet below. If the rock drops at an average rate of 25 feet per second, when will the rock hit the water?

6. Write… 1. Think about the examples and non- examples. Write a hypothesis about the meaning of a Direct Variation. 2. How can we tell from a graph, table, or word problem if the function is a direct variation?

7. Pair, Share Share your ideas with the person next to you.