Question 813914
Solve the equation for y;
adjust into slope intercept form;
form the general slope-intercept form equation and solve for b.
Substitute point P and new slope of {{{-(1/m)}}} into this formula for b and compute b.
Replace the needed slope and value of b into the general slope-intercept equation to express your desired linear equation.



------------------------------------------------
A Reminder:  y=mx+b is slope-intercept form for a line.  A line perpendicular to it will need a slope of {{{-(1/m)}}}.

You could say, for perpendicular equations y=mx+b and y=Mx+c, that {{{M*m=-1}}}.