Question

Find the distance between the lines with equations -9x-8y+4=0 and y=-9/8x+6

Answer 1

well,how about finding a point of this equation?
-9x - 8y + 4 = 0 --> 8y = -9x + 4 --> y = -9/8 x + 1/2

Answer 2

can you find a point?

Answer 3

8

Answer 4

can you show me the formula and how to do it please

Answer 5

ok,i will show you,but 8 is not correct,i said find a point!and points are used to write like this:
(x,y)

Answer 6

oh okay. well im trying to not graph it

Answer 7

(8,-8.5) is a point of this line...

Answer 8

-8.5 =( -9/8 x 8) + 1/2

Answer 9

ok?

Answer 10

howd you get (8,-8.5) ?

Answer 11

it's not difficult,you just need a table like this:

Answer 12

for example if x=1 then find y from this equation:
y = (-9/8 x 1) + 1/2

Answer 13

i almost have to go :( whats the answer you got?

Answer 14

just keep typing me all the things you did to get the answer

Answer 15

i didn't calculate,but i think it's much better that you know how to solve it,if you get answer,you can't solve another same questions,can you?

Answer 16

we have a formula for these questions...but i wanted to tell you how to solve it,but if you want the formula,i will give it to you :)

Answer 17

no i cant.. but i just wanted to see how you work it out and the answer so i could see exactly how you did it in order for me to try another problem like that

Answer 18

ii gotta go :(

Answer 19

ok when we have these two equations:
y = mx + b1
y = mx + b2
use this formula:
\[d = \frac{ |b2 - b1| }{ \sqrt{m ^{2}+1} }\]

Answer 20

but for solving it,we can use this formula or solve it by the laws of mathematics...

Answer 21

i can tell you how to solve it by the laws of mathematics :)