How to calculate the coefficients of a line in the standard form

I need a MATLAB code to calculate A, B, and C in Ax+By+C=0 considering two points

x1=-2; x2=3; y1=4; y2=-5

Thanks

Answer 1

[Image Analyst]

x1=-2; x2=3; y1=4; y2=-5
coefficients = polyfit([x1,x2], [y1, y2], 1)
%  I need a MATLAB code to calculate A, B, and C in  Ax+By+C=0
% Equation is y = coefficients(1) * x + coefficients(2), or
% coefficients(1) * x + coefficients(2) - y = 0
% so
A = coefficients(1)
B = 1
C = coefficients(2)

coefficients =

-1.8 0.399999999999999

A =

-1.8

B =

1

C =

0.399999999999999