一道英文数学题
writeanequationforthelinethatisperpendiculartothegivenlineandthatpassthoughtthegivenpoint:
y=(-1/3)x+2;thepointis(4,2)
(-10)x+(8)y=3;thepointis(15,12)
列如:
y=5x+3;thepointis(0,2)
y=(-1/5)x-2
我想知道是怎么解的,