Question 79782
*[invoke calculating_slope 5, -2, 3, 7]

Now to get it into standard form, add 4.5x to both sides


{{{y+4.5x=cross(-4.5x+4.5x)+20.5}}}


{{{y+4.5x=20.5}}}


Now multiply both sides by 2

{{{2(y+4.5x)=2(20.5)}}}


{{{2y+9x=41}}}

So it is now in standard form if we arrange x and y


{{{9x+2y=41}}}
 

where A=9, B=2, and C=41