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- Phebe

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- Phebe

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- katieb

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- nincompoop

so every time you see rate of change problem, you are looking for a slope-related solution. can you try to solve the problem now based on the hint I gave you?

- Phebe

Well i was already given that hint.
i suppsed to use mx+b
right?

- nincompoop

something like it, but you're missing a lot of other information

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- Phebe

please tell me what im missing. i really need to get this right

- nincompoop

it has to be an equation

- Phebe

yea it is
5x+3y=-2

- nincompoop

so how will you convert that into slope-intercept form?

- Phebe

i forgot

- nincompoop

\(ax + by = c \)
\(ax - ax + by = c - ax \)
\(\large\frac{by}{b} = \frac{-ax}{b} + \frac{c}{b} \rightarrow y = \frac{-ax + c}{b} \)

- nincompoop

it is just a matter of algebraic manipulation that requires you to solve for y

- nincompoop

a and b are your coefficients for the x and y respectively and c is the constant

- Phebe

so ummmm............. i get that
but what do i put for the letters

- nincompoop

do you know how to solve for y (isolate y) ?

- Phebe

Yes i do

- nincompoop

try

- Phebe

okay i know i suppse to solve for y , All i need is the equation?
How do i get the equation

- nincompoop

uh when you solve for y, you have an equation in terms of y and that is what you need to be able to identify the "rate of change," which is the slope (coefficient) of x in the equation

- nincompoop

SOLVE for y, right now

- nincompoop

I do not need a "suppose," I just need you to show me that you can actually solve for y

- Phebe

the equation is 5x+3y=-2
right?

- nincompoop

why are you asking me, isn't that the problem you're given?

- Phebe

yes

- nincompoop

what makes an equation is the presence of the equal sign

- Phebe

Oh wait i get how to do it!
thanks for everything!!

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