How do you find a standard form equation for the line with (-1,-2) ; perpendicular to the line 2x+5y+8=0?
Always keep in mind that when two lines are perpendicular, the product of their slopes is -1.
slope intercept equation of a straight line is given as:-
comparing with slope intercept form, slope
let slope of second line be
since it passes through
hence equation becomes,
Hence required equation is