$\definecolor{red}{RGB}{255,0,0}$$\definecolor{black}{RGB}{0,0,0}$ Points of intersection with the axes of a non-vertical line

If the equation is of the form A x + B y + C = 0 calculate first a=-A/B; b=-C/B

Numbers in the form 1/2 or 0.5 or 1.5E3 are accepted: