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Mathematics 8 Online
OpenStudy (anonymous):

Solve the equation for y: 4x + 3y = -12

OpenStudy (anonymous):

you can only get y in terms of x. In which case keep y on left hand side and shift all the other terms to the right and side, That should fetch you the answer!

OpenStudy (amistre64):

subtract 4x from both sides then divide it al by 3

OpenStudy (anonymous):

I still can't get the answer.

OpenStudy (anonymous):

-12-4x the whole divided by three

OpenStudy (anonymous):

bt then ull have to know whats x

OpenStudy (anonymous):

\[y=-12-4x \div3\]

OpenStudy (anonymous):

do u know wats x

OpenStudy (anonymous):

You cannot solve for both y and x, with only one equation, In general if you have n variables you need n equations, so in this case we have 2 variables so we would need 2 equations to solve them. They come under the category of simultaneous linear equations.

OpenStudy (anonymous):

x is a variable if you plot a graph a straight line will form

OpenStudy (anonymous):

I got -4 for the overall problem is that correct?

OpenStudy (anonymous):

That is wrong, you cannot get a number as an answer @TheWiz

OpenStudy (anonymous):

So what's the answer? & how did yu get the answer?

OpenStudy (anonymous):

your answer is (-12-4x)/3

OpenStudy (anonymous):

First take 4x to the other side, so it becomes -12-4x, then divide the whole by 3 which will give you the resulting answer.

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