What's the equation of the line that be that passes through (4,2) and is parallel to the line y=2x-1

A) x-y=6

B) 2x-y=6

C) 2x-y=1

D) 2x-y=-1

y=mx+b

because the y=2x-1, so m=2

because we know (4.2), so we can bring it in to the function:

2=2x4+b

2=8+b

b=-6

So the other one is: y=2x-6

in other way it's 2x-y=6

Which means the answer is B.