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Mathematics 7 Online
OpenStudy (anonymous):

dfgifdjo

OpenStudy (anonymous):

First lets solve this equation for y. Do you know how to do that?

OpenStudy (anonymous):

-2n-1

OpenStudy (anonymous):

Not quite. Lets try and do this step by step. \[4x+6y+2=0\] \[4x=6y=-2\] \[6y=-4x-2\] \[y={-4\over6}x - {2\over6}\] \[y=-{2\over3}x-{1\over3}\]

OpenStudy (anonymous):

Now you know that the equation of a line is y=mx+b right? m is equivalent to the slope and b is the y-intercept(fancy way of saying where it crosses the y axis).

OpenStudy (anonymous):

Here is a graph of this line to help better visualize what's going on: http://www.wolframalpha.com/input/?i=graph+4x%2B6y%2B2%3D0

OpenStudy (anonymous):

So if m is our slope, slope is defined to be "rise" over "run". So in this case we "rise" -2 and "run" 3. Do you see how that works?

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