Which of the following equations describe the same line as the equation 1/2x-5y=1?
(a) 2x-1/5y=1
(b) x=5y+2
(c) 2-5x+10y=0
(d) y=.1(x-2)
(e) 10y-x= -2
(f) 1+.5x=2+5y