Question 161446
the PRODUCT of the slopes of perpendicular lines is -1


9x+4y=-67 __ 4y=-9x-67 __ y=(-9/4)x-67/4 __ slope is -9/4


so slope of new line is 4/9


using point-slope __ y-1=(4/9)(x-(-7)) __ y-1=(4/9)x+28/9 __ y=(4/9)x+37/9