The slope intercept form of a linear equation is y = mx + b where m is the slope of the line and b is the y-intercept.
Click on the blue points on the sliders and drag them to change the figure. What type of line can not be represented in slope intercept form? Hint: This type of line would require m to be infinite. |
Manipulative 1 - Slope Intercept Form of a Linear Equation Created with GeoGebra. |
One advantage of the slope intercept form is that it is easy to graph. First, plot the y-intercept. Since x is zero for the y-intercept, the point to plot is ( 0, b ). Next plot a point that is one unit to the left of the point and m units higher or lower.
Click on the blue points on the sliders to change the figure. |
Manipulative 2 - Graphing a Line Using Slope Intercept Form Created with GeoGebra. |
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