4Slope of a LineNotice that this is the rate of change of y with respect to x.The units of the range variable go in the numerator and the units of the domain go in the denominatorNow, how would this look in function notation?
5Definition of SlopeThe slope of the line is it’s measure of steepness. It measures the rate of change of the line. In all lines the slope is constant, it doesn’t change no matter where you are at on the line.
7BicyclesIn groups, generate the line that relates the number of wheels to the number of bicycles. Represent it Graphically.What does the slope of this line represent?Is this a discrete or continuous function?
8Graph of a Line x y -1 -5 -3 1 2 3 What do the red points represent? -3123What do the red points represent?What does the line represent?
9InterceptsWhere the graph crosses the x-axis is the x-intercept. It has coordinates (a,0).Where the graph crosses the y-axis is the y-intercept. It has coordinates (0,b).
10The x and y intercepts of a line (0,b)x-interceptx(a,0)
11ExampleFind the x and y intercepts of the line given by:
12Slope Intercept FormAny stinking point on the lineyy-interceptx
13Determine the slope and y-intercept of the following
14Point Slope Form Any stinking point on the line y Any stinking fixed point on the linex
15Find the Equation of the Line Through the Points
16Line FormulasSlope FormulaSlope Intercept FormPoint Slope Form