Question 146634
"HELP HELP HELP.....PLEASE PLEASE" __ not too panicky...


parallel lines have the same slope
perpendicular lines have slopes which are negative reciprocals


1.A. subtracting x __ 7y=-x+5 __ dividing by 7 __ y=(-1/7)x+(5/7) __ new slope is -1/7
__ using point-slope __ y-7=(-1/7)(x-5) __ y=(-1/7)x+(54/7)


1.B. subtracting 7 __ 5y=4x-7 __ dividing by 5 __ y=(4/5)x-(7/5) __ new slope is 4/5
__ using point-slope __ y-5=(4/5)(x+9) __ y=(4/5)x+(34/5)


2.A. subtracting 8x __ y=-8x+9 __ new slope is 1/8
__ using point-slope __ y-6=(1/8)(x-3) __ y=(1/8)x+(45/8)


2.B. subtracting 8x __ 3y=-8x+3 __ dividing by 3 __ y=(-8/3)x+1 __ new slope is 3/8
__ using point-slope __ y+6=(3/8)(x-2) __ y=(3/8)x-(27/4)