Chapter 22
Using the Algebra of Lines
The equation of a line can take on one of many forms. The more popular are the slope-intercept form, y = mx + b, and the standard form, Ax + By = C. Each has its advantages and uses in the different applications for lines. Formulas involving lines are often based on one of these forms.
The Problems You'll Work On
Lining up equations and applications in this chapter requires the following techniques:
What to Watch Out For
Although working with line formulas is the main skill in this chapter, don't forget the following:
Writing Equations of Lines Using the Slope and a Point
926−931 Write the equation of the line given the slope and a point on the line.
926. m = 2, (−3, 4)
927.
928. m = −3, (4, 0)
929.
930. m = 0, (4, 3)
931. m is undefined, (−3, 5)
Writing ...
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