1. Speed and the Slope Connection Question to ponder: What does speed have to do with slopes? Created by Christina Varghese-Thomas PS/IS 123

2. SLOPES Definition: How steep a line is Slope The steeper a hill is, the _____________ you will go! faster

3. What do you notice about these graphs? Graph of y=3xGraph of y=7x

4. What do you notice about these graphs? Graph of y=3x+0 Graph of y=3x+2.5

5. Compare these graphs. What does the negative sign do to the line? Graph of y=3x Graph of y=-3x

6. Two lessons on how to find Slope of a line: http://www.math.com/school/subject2/less ons/S2U4L2GL.htmlhttp://www.math.com/school/subject2/less ons/S2U4L2GL.html http://www.purplemath.com/modules/slopg rph.htmhttp://www.purplemath.com/modules/slopg rph.htm

7. Quick Quiz In y=5x+4, what is the slope? In y=5x+4, what is the y-intercept? What is the slope of this line? The higher the slope, the ___________ the line. A “downhill” line has a _____________ slope. 5 (0, 4) Slope = 2/3 steeper negative