In the xy
xy-plane, line l
l passes through the origin and is perpendicular to the line with equation 5x−2y=8
5x-2y=8
. which of the following could be an equation of line l
l
?

a

5x−2y=8
5x-2y=8

b

y=
2
5
x
y=25x

c

2x+5y=0
2x+5y=0

d

y=−
5
2
x+4
y=-52x+4