• Vector
• Parametric
• Point–Slope
• Two-point
• General
• Slope
• Intercept
• V
• Locus

A, B and C are constants and the values of A and B cannot both be equal to zero.

The equation is usually written with a positive value for A.

The slope of the line is:

The direction vector is:

Examples

Determine the equation in general form of the line that passes through Point A = (1, 5) and has a slope of m = −2.

Write the equation in general form of the line that passes through points A = (1, 2) and B = (−2, 5).

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