Linear equations..HELP!!?

Question

I'm having trouble with linear equations...Its been 30 years since I had algebra and am going to be taking intro to algebra in the fall semester....if anyone can help it would be greatly appreciated and if you could show how you arrived at your answer I'd appreciate it  :-)

Thanks!!!                    3x+2y=6  and 9y=x-4   and 3y+6x=-21

Anonymous · Accepted Answer

A linear function is written as: y = mx+b, where m is the slope and b is the y-intercept.

1.) 3x+2y = 6
2y = 6-3x
y = 3-3/2x

2.) 9y = x-4
y = (x-4)/9

3.) 3y+x = -21
3y = -x-21
y = -(x+21)/3

J · Answer

Try using http://www.wolframalpha.com/
It's a great site, you impute the equations and it gives you the answers and how to work it out step by step.  It should help.

Linear equations..HELP!!?

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