MaeganR
solve by graphing x + y = 3
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Mathhelp346
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Turn it into slop-intercept form, which is y=mx+b.
m is the slope
b is the y-intercept
Mathhelp346
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*slope
MaeganR
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So Y= 3x + b?
Mathhelp346
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No
DHASHNI
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x + y = 3
we know that the general form of slope is y=mx +c
where m is the slope and c is the intercept
and so , i am trying to make the given equation to look like the general form
=> y=(-1)x+3
find the points:|dw:1357702924977:dw|
MaeganR
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My teacher is not doing that way, and I am so confused
Mathhelp346
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Ok, so your equation is x+y=3 In order to turn this into slope-intercept form, you will subtract the x, leaving you with y=-x+3. Similar to y=mx+b, right? Then, 3=b(y-intercept) and the slope is -1. Slope is: \[\frac{ rise }{ run }\]
MaeganR
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I am sorry there are two parts to the problem, the first is x + y=3 and 2x + 5y = 12
MaeganR
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I am new at this and I totally apologize
Mathhelp346
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Then, you just do the same. Except you would have to divide both sides by 5. |dw:1357703298547:dw|
MaeganR
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Ok
Mathhelp346
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|dw:1357703426599:dw|
MaeganR
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Ok I knew you had to do something to both sides, but I was not sure what to do once I got a fraction
MaeganR
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Thank you
Mathhelp346
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You're welcome :)