3The slope we are studying is associated with the graph of a line.
4Definitions of Slope The tilt or inclination of a line The ratio of vertical change to horizontal change.The change in y over the change in xAllow students time to copyMay need to review that a ratio is a comparison of numbers
5Tilt or Inclination Discuss positive and negative slope. Discuss when slope equals 0 and is undefined.
6Vertical Change Horizontal Change This ratio is also known asRiseRun
7How many points do you need to draw a line? OneTwoThreeQuiz students
8Graph (3,2) and (-1,-1)Remember to click to make each part appear
9Draw a line through the points. Line will appear automatically
10Now that we have our line lets find its slope. Remember we are finding the following ratio:Vertical or RiseHorizontal Run
11Vertical Change or the Rise 3Discuss vertical change
12Horizontal Change or the Run 43Discuss horizontal change
13Vertical Rise Horizontal Run 34May need to remind students that a ratio is a comparison of two numbers
28Change in y over the change in x The formula for findingthe slope of a line.
29Class Activity Click on the following link for slope practice. If link does not work go toOr go go to click on lines/linear equations, click on slope calculation.Demonstrate web activity one time. Then have students come up and pick different numbers and have class find the slope together.If no link do all examples on the board. Students can still pick points.
30Closing ActivityYou will receive a second worksheet. Given 2 points, find the slope using the slope formula. You will turn in the worksheet.More than likely this worksheet will be homework.