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The position of the line relative to the coordinate system

Lecture



The straight line has the equation ax + by + c = 0, consider the special cases:

1) a = 0, b ≠ 0. Then the equation of a straight line takes the form:

  The position of the line relative to the coordinate system

.

  The position of the line relative to the coordinate system

All points of the line, regardless of the abscissa x, have the same ordinate

  The position of the line relative to the coordinate system

and straight line parallel to the x axis. If c = 0, then the straight line coincides with the x axis.

2) a

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Planometry

Terms: Planometry