Lovescats2886 Lovescats2886
  • 04-07-2018
  • Mathematics
contestada

surjithayer10 said:
9x+2y=6
divide by 2
3x+y=3
y=-3x+3
it is in the form y=mx+c

How did you get the 3x+y=3 into y=-3x+3 ?

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Luv2Teach
Luv2Teach Luv2Teach
  • 04-07-2018
That is incorrect from the beginning because 9 divided by 2 is not 3.  If you are putting that original equation into slope-intercept form you begin by subtracting 9x from both sides.  2y = -9x + 6.  Divide both sides by 2 and you have an equation solved for y:  [tex]y=- \frac{9}{2}x+3 [/tex].  That is slope-intercept form of the original equation, which is a line in standard form
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