Question 184084
Get the original equation in the form {{{y = mx +  b}}}
{{{5 x + 3 y = 5}}}
{{{3y = -5x + 5}}}
{{{y = -(5/3)x + 5/3}}}
*[invoke equation_parallel_or_perpendicular "parallel", "-(5/3)", "(5/3)", 7, 2]