Question

Find the distance between the pair of parallel lines

y=4x+4
4x-y=1
Select one:
a. d=1.64
b. d=1.47
c. d=1.21
d. d= 1.28

Answer 1

distance between two parallel lines is given by
`\fracb_2 - b_1{ \sqrt{ m^(2) +1} } = \frac-1 - 4{ \sqrt{ 4^(2) +1} } = (|-5|)/( √( 16 +1) ) = (5)/( √(17) ) =1.21`