write an equation of the line containing the given points & perpendicular to the given line. (0,5) ; 8x+5y=3

- anonymous

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- anonymous

y = log x
If y = 10, then what is x?

- anonymous

(-8x+3)/5=y

- anonymous

y=-8/5x +3/5

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- anonymous

any questions on what I did so far?

- anonymous

can you show me how you got that?

- anonymous

your equation was
8x+5y=3
right?

- anonymous

right

- anonymous

I was equation of y in terms of x

- anonymous

wait is this the answer to my question?

- anonymous

So I subtracted 8x from both side
I got
5y=-8x+3

- anonymous

any questions so far djm?

- anonymous

so this isnt the answer to my question?

- anonymous

don't quite understand your statement of equation of y in terms of x

- anonymous

we are describing y in terms of x
another way to explain would be
what do you have to do to x so it equals y

- anonymous

does this help?

- anonymous

ya that is a little better

- anonymous

so getting back to our equation
5y=-8x+3

- anonymous

ok

- anonymous

we want y by itself so we divide by 5 BOTH SIDES.

- anonymous

ok

- anonymous

y=-8/5x+3/5

- anonymous

any questions so far?

- anonymous

no good so far

- anonymous

Now we have to go back to the original question

- anonymous

ok sorry had to refresh again

- anonymous

i need help please T_T no one wants to help

- anonymous

"perpendicular to the given line" is the keyword from your question

- anonymous

okay

- anonymous

PLEASE PLEASE! IM SORRY! BUT I NEED HELP,T___T

- anonymous

parallel lines have same slope
perpendicular lines have negative reciprocal slope

- anonymous

right

- anonymous

going back to our equation
y=-8/5x+3/5

- anonymous

so noes going to help me!

- anonymous

>:( fine, feel my wrath of rage

- anonymous

slope is -8/5
opposite reciprocal is 5/8
point slope form is
y - y1=m(x-x1)
from question
(y-5)=5/8(x-0)

- anonymous

y-5=5/8(x-0)
that is your equation
any question

- anonymous

ok that is where I was having problems was with the last formula u used. thank you very much for taking the time to explain it to me.

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