Linear function (calculus): Difference between revisions

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General form: rm space
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The general form has 2 variables ''x'' and ''у'' and 3 coefficient letters A, B, and C.
 
This form is not unique. If one multiplies ''A'', ''B'' and ''C'' by a constant factor ''k'', the coefficients change, but the line remains the same. For example, 3''x''-2''y''=1 and 9''x''-6''y''=3 are general forms of the same line.
 
This general form is used mainly in geometry and in systems of two linear equations in two unknowns.