Presentation on theme: "MCC85 & MCC86. Students will graph and analyze graphs of linear equations. a. Interpret slope as a rate of change. b. Determine the meaning of the slope."— Presentation transcript:
1MCC85 & MCC86. Students will graph and analyze graphs of linear equations. a. Interpret slope as a rate of change. b. Determine the meaning of the slope and y-intercept in a given situation.
10On the piece of graph paper Choose any two points on the line.Write down the two points.Label the two points with (X1, Y1) (X2, Y2)Write the formulaSubstituteSolve
11Is there an easier way??? YES!!! Slope is how your line changes up/over!Soooooo….Pick any two pointsCount the number of spaces you move up.Count the number of spaces you move over.This is your slope!If you move up and to the right, your slope is positive.If you move up and to the left, your slope is negative!
12Determine the slope of the line. Start with the lower point and count how much you rise and run to get to the other point!rise3==run663Notice the slope is positive AND the line increases!12
13What is the slope of a vertical line? The line doesn’t run!All vertical lines have an undefined slope.
14What is the slope of a horizontal line? The line doesn’t rise!All horizontal lines have a slope of 0.