How can we derive the standard form of the linear equation: Ax+By+C=0? What do "A", "B" an

Havlishkq

Havlishkq

Answered question

2022-02-17

How can we derive the standard form of the linear equation:
Ax+By+C=0? What do "A", "B" and "C" in the standard form of the linear equation mean? As in the point-slope form of the linear equation:
yy0=m(xx0), m is the slope, and x, y are the coordinates of any point. Likewise,x0,y0, are the coordinates of the given point.

Answer & Explanation

Nicolle Newman

Nicolle Newman

Beginner2022-02-18Added 4 answers

Let's say we start with the point-slope form
yy0=m(xx0),
where (x,y) represents any point on the line, and (x0,y0) represents a given point on the line, and m is the given slope of the line. Now,
yy0=m(xx0)yy0=mxmx0
yy0mxmx0=0
(m)x+y+(y0mx0)=0
Now, we can simply let A=m,B=1,C=(mx0y0), which means that
y+(m)x+(y0mx0)=0Ax+By+C=0

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