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Oct 8 2013 07:28pm


spent close to 2 hours on it now ;_;


so, the slope m should be equal to -3/2


i calculated the derivative of the thing: f(x) = -6 / (3x - 2)^2

try to find x value, but i always get 2/3 which makes the denominator 0 :S

so i can't find x value, if i could then finding y value would be easy ;_;

any help would be awesome lol


also, i graphed the 2nd equation (the linear function) and it looks like one of the points is (0, -1), but i can't figure out even how to get that. :S
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Oct 8 2013 07:36pm
the first step is to know what slope you want, which is -3/2 (good job, you know this step)

now the next step, you want to know the x-value when the derivative is equal to the slope

so set your derivative equal to -3/2, and solve for x.

this gives you your x-value. now all that's left is to find the y-value.

so plug your x-value into the original equation to find the y-value
bam, all done
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Oct 8 2013 07:40pm
Hint: after working this on scratch paper, you should get 2 x-values.
So you should have 2 different points!
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Oct 8 2013 07:48pm
Nvm, messed up, got 4/3 and 0

This post was edited by zackill4 on Oct 8 2013 07:50pm
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Oct 8 2013 08:00pm
lolz. found my problem

kept putting 6 instead of -6 in the derivative of the original equation..

gg like 2 hours wasted on it lol i suck :C

thanks for the help though lol
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Oct 8 2013 08:02pm
Quote (King-Punisher09 @ Oct 8 2013 06:28pm)
so, the slope m should be equal to -3/2
good

Quote (King-Punisher09 @ Oct 8 2013 06:28pm)
i calculated the derivative of the thing: f(x) =  -6 / (3x - 2)^2
excellent

Quote (King-Punisher09 @ Oct 8 2013 06:28pm)
try to find x value, but i always get 2/3 which makes the denominator 0 :S
Ok this is where you lost me, here is what you should do:



Oh I see you found your problem, nice.

This post was edited by Azrad on Oct 8 2013 08:02pm
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