anonymous
  • anonymous
graph all solutions to the following 2x+3y=6
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
solve for y y = (6-2x)/3
anonymous
  • anonymous
plug into graphing calc
anonymous
  • anonymous
thanks but i dont have one

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anonymous
  • anonymous
try this: http://www.wolframalpha.com/
anonymous
  • anonymous
i used matlab to plot this.
1 Attachment
anonymous
  • anonymous
plug the equation i gave u in there and then just copy it down
anonymous
  • anonymous
Or you could just... you know... plug in two points and use a ruler?!?
anonymous
  • anonymous
thank you I give it a try I am just having a hard time understanding how to plot or knowing when to when i look at a problem
anonymous
  • anonymous
Ok, well pick an x that's nice (say 0). Then plug it in and find out what y is.
anonymous
  • anonymous
what do you get for y?
anonymous
  • anonymous
I did not know should I replace x with a 0?
anonymous
  • anonymous
y = 3
anonymous
  • anonymous
y= 0,3
anonymous
  • anonymous
(x,y) = (0,3). Then do the same thing for y (plug in a 0) and find a second point
anonymous
  • anonymous
for (x,y) = (?,0)
anonymous
  • anonymous
Kool thank you so my answer is x=0,3 and y= 3,0?
anonymous
  • anonymous
no
anonymous
  • anonymous
When you plug in a 0 for x you get y = 3 that's correct. That gives you the point (x,y) = (0,3). If you plug in a 0 for y you have this equation: \[0 = (6-2x)/3\]
anonymous
  • anonymous
Which gives you \[x=3\] sorry, missread it. Ok, so now you have a second point (x,y) = (3,0)
anonymous
  • anonymous
So you draw a Cartesian grid and draw those two points, then connect them with a straight line. That line represents all the x,y pairs that are solutions to the equation.
anonymous
  • anonymous
You are so smart, that actually makes sense but what about y=5x-1 do i still use 0?
anonymous
  • anonymous
would I go up 5 and down 1??
anonymous
  • anonymous
If you are just being asked to graph it you can plug anything you want in for x or y (but not both!) then solve for the one you didn't plug in and you will have a point on the graph.

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