Four Representations of Linear Equations #3: Finding Rate of Change From a Spreadsheet
4 Representations of Linear Equations #3: Rate of Change in a Spreadsheet Background Completion of 4 Representations #1- #2. Inquiry Steps Click on button 1. You will see Δy and Δx change to 0, and the description will show 0 change. Look at rows 2 and3 on the spreadsheet and use them to find the pattern for the rate of change. Adjust the sliders to fit that pattern. When the sliders match the pattern, the equation should appear at the bottom of the yellow window. Question 3-1: Write one or two sentences explaining how you discovered the rate of change by observing the spreadsheet. Now add three more data points to the spreadsheet. When you are finished, all three points should be on the line. Question 3-2: Write one or two sentences explaining how you chose the values for the three additional data points. Question 3-3 through 3-12: Write the values for Δy and Δx, the equation, and the five data points for each of the ten situations. Example: 1. Δy=-7 Δx=3, y =- 7/3x, (0, 0) (3, -7) (6, -14) (9, -21) (12, -28) Reflection Question 3-13: Write a paragraph describing in your own words what you have learned through this exercise. Question 3-14: What would you change about this exercise to make it better? Question 3-15: I found this: 1-Very interesting, 2-Interesting, 3-OK, 4-Boring, 5-Very Boring Question 3-16: I learned: 1-A lot, 2-Something, 3-Not much, 4-More confused than before.