March 2004
Beginner
504 pages
9h 2m
English
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Chapter 1, “Points and Lines”
Equation of a Line
The graph of an equation of the form Ax + By = C, where A and B are not both 0, is a straight line.
Slope
For any line in standard form, Ax + By = C, the slope m = –A/B.
Parallel Lines
If two lines are parallel, their slopes must be equal.
Perpendicular Lines
If two lines are perpendicular, 
Equation of a Line
Slope-intercept form: y = mx + b
Point-slope form: (y – y1) = m(x – x1)
where (x1,y1) is a point on the line.
System of Linear Equations
A system of two linear equations in the same plane has ...
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