2.2 Slope of a Line
Slope
Meet Joe….Joe Cool Joe has a disease, he can only walk to the right. Use Joe to help you find the slope Always start on the left to help Joe walk to the right
“slope” 3
Graph the line containing the points (-4,2) and (2,-3) and find the slope. 6
Slope of a Horizontal line (y=#) Always 0 HOY H: horizontal line 0: 0 slope Y: y= #
What is the slope? (5,4) (-6,4) Horizontal line = “0” slope
Slope of a Vertical Line (x=#) Always Undefined VUX V: Vertical Line U:Undefined slope X: X=#
What is the slope? (3,8) (3,-2) Vertical line = “undefined”
Slope Formula
Find the slope of the line containing (2,2) and (8,9) 9-2 =
Find the slope of the line containing (-4,-6) and (3,-2) M= = =
Find the slope of the line containing (1,1) and (3,5)
Find the Slope from a table Hours (x) 1234 Feet (y)
A line contains points (5, 3) and (x, 9) and has slope = 3. Find the value of x. 3= 9-3 x-5 3 = 6 x-5
A line contains points (9, -5) and (-8, k) and has slope = 0. Find the value of k.
Homework TB: Page 53 (1-3 all, 7-18 all, even)
Adventures of Slope Dude R-w R-w