Which equation represents a line that is perpendicular to the line y= 1/4x - 1
a) y=-1/4x - 3
b) y= 1/4x + 1
c) y= 4x-5
d) y= -4x - 2

Y = 1/4x - 1the slope here is 1/4but for a perpendicular line we need a negative reciprocal slope...all that means is " flip " the slope and change the sign. 1/4flip it4/1change the sign-4/1 or just -4. So our perpendicular line will have a slope of -4. The only one in ur answer choices with a slope of -4 is Dso ur answer has to be D.