



 
Hi Erick, With the equation $y = mx + c$ I would first add $y$ to both sides. This gives $mx  y + c = 0$ which may be all you need as it is in the form $Ax + BY + C = 0$ with $A = m, B = 1$ and $C = c.$ If either of the constants $m$ or $c$ is a fraction you can multiply both sides of $mx  y + c = 0$ by the denominators of the fractions and simplify to obtain the form $Ax + By + C = 0$ with all the coefficients integers. Penny  


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