The distance between the two parallel lines L1: −7 x − 10 y=−4, L2: −7 x − 10 y=3 is ?????

Question

anonymous · Answer

-7x-10y=-4 can be re-written as:
-10y=7x-4.
-7x-10y=3 can also be re-written as
-10y = 7x +3
i.e. in the form y=mx+c 
this shows that the slopes are indeed the same (they lines are parallel), and the distance is 7. i.e. from the first c (on the y-axis) to the second c. (i.e. from -4 to 3)

anonymous · Answer

i tried 7 it didn't wok

anonymous · Answer

change signs first, they become:
10y=-7x-3 and 10y=-7x + 4
now divide across by 10. 
y=-7x-3/10 and  y= -7x +4/10 so answer is 4/10+ 3/10 = 7/10 or 0.7

anonymous · Answer

apologies for oversight!

anonymous · Answer

again says incorrect

anonymous · Answer

It might say incorrect, but I am certain this is the answer for the equations you gave, so either:
a) did you try both values 7/10 AND 0.7
b) can you check to see if the equations themselves are correct as per question
if they are then there is either a problem with the question or the answer it has.

anonymous · Answer

A) yes i tried both
B) yes they r correct at leas i copied right :D

anonymous · Answer

The distance between the two lines is not the gap between the y-intercepts. The distance between the two lines is the distance along a perpendicular line. The slope of the perpendicular is the inverse of the slope of either parallel line.