How do you find the equation of the line in slope-intercept form that is perpendicular to the line -4x - 3y = 9 and passes through (12, -7)?
can be re-written in slope intercept form as:
and therefore has a slope of
Lines which are perpendicular to each other have slopes that are the negative reciprocal of one another.
Therefore any line perpendicular to
Since the desired line has a slope of