A. Using Slope-Intercept Form
- Slope-Intercept form is y = mx + b
- "m" represents the slope.
- "b" represents the y-intercept.
- Steps for graphing using y = mx + b
- Solve the equation for y.
- Determine the slope and y-intercept.
- Graph the y-intercept.
- Use the movements from slope (or rise/run) to graph more points from the y-intercept.
- Connect the points with a straight line and arrows on each end.
- Label the line with its equation.
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B. Using x and y Intercepts to Graph.
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x-intercept - the point where the line crosses the x-axis.
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y-intercept - the point where the line crosses the y-axis.
- Find the x-intercept.
- Substitute zero in place of y in the equation.
- Solve the equation for x.
- You get the ordered pair (x, 0).
- Find the y-intercept.
- Substitute zero in place of x in the equation.
- Solve the equation for y.
- You get the ordered pair (0, y).
- Graph the two intercepts or points.
- Connect the points with a straight line and arrows on each end.
- Label the line with its equation.
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