slope - describes the steepness of a line = rise run

y x rise run rise slope run = - how much does the line go up or down? What is the change in y? - how much does the line go right? y x What is the change in x?

SLOPE MAN!!! U Positive Slope Negative Slope Undefined Slope NO Slope Zero Slope

Find the slope. rise slope run rise run rise rise run run 1 3 +4 -3 +2 = rise run +6 -3 +4 +2 +2 rise run = = 1 3 rise run = +4 -3 +2 = -3 2 +2 +6 rise run = UNDEFINED No SLOPE

You don’t need a graph to find the slope! Check it! • (x1, y1) (x2, y2) (4,0) (1,5) rise = -5 0 - 5 = run = 3 4 - 1 - 5 = 3

You don’t need a graph to find the slope! (x1, y1) (x2, y2) (x1, y1) (x2, y2) (7,-1) (9,-1) (-6,-4) (-8,10) -1 - (-1) = -4 - (10) = 7 - 9 -6 - (-8) = 2 -14 = 2 = -7 =

To Find Slope .... y x rise slope run change in y slope change in x = How to find the y-intercept: - the point where the line crosses the y-axis - from an ordered pair, look for when x is 0. ex. (0,4) y-intercept is 4