1. 5-1 Rate of Change and Slope

2. Rate of Change: shows the relationship between two changing quantities
𝑟𝑎𝑡𝑒 𝑜𝑓 𝑐ℎ𝑎𝑛𝑔𝑒= 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑡ℎ𝑒 𝑦 𝑣𝑎𝑙𝑢𝑒𝑠 𝑐ℎ𝑎𝑛𝑔𝑒 𝑖𝑛 𝑡ℎ𝑒 𝑥 𝑣𝑎𝑙𝑢𝑒𝑠

3. Problem 1: Finding Rate of Change Using a Table

5. Problem 2: Finding Slope Using a Graph
What is the slope of each line?

6. What is the slope of each line?

7. The Slope Formula

8. Problem 3: Finding Slope Using Points

10. Problem 4: Finding Slopes of Horizontal and Vertical Lines

12. Without graphing, tell whether the slope of a line that models each linear relationship is positive, negative, zero, or undefined. Then find the slope.
The cost of a pair of jeans is $22.50 for 1 pair and $67.50 for 3 pairs.

13. Without graphing, tell whether the slope of a line that models each linear relationship is positive, negative, zero, or undefined. Then find the slope. An employee earns $28.50 after 3 hours and $ after 25 hours.