Simultaneous Equation

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O-LEVEL:  Simultaneous Equation
Damian Offline
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Post Icon Simultaneous Equation

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How to solve simultaneous equation by graphically[img]images/smilies/huh.gif[/img][img]images/smilies/huh.gif[/img][img]images/smilies/huh.gif[/img][img]images/smilies/cool.gif[/img][img]images/smilies/biggrin.gif[/img]

 
04-25-2017 07:09 PM
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Catherina Offline
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RE: Simultaneous Equation

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Example
  • Solve these simultaneous equations by drawing graphs:
  • 2x + 3y = 6
  • 4x - 6y = - 4
For example, to draw the line 2x + 3y = 6 pick two easy numbers to plot. One when x = 0 and one where y= 0
  • When x = 0 in the equation 2x + 3y = 6
  • This means 3y = 6 so y = 2
  • So one point on the line is (0, 2)
  • When y = 0
  • 2x = 6 so x = 3
  • So another point on the line is (3 ,0)
In an exam, only use this method if you are prompted to by a question. It is usually quicker to use algebra if you are not asked to use graphs.[Image: e3d37f7336080cec6518df1f45fe9b58430d8cbb.gif] Linear and quadratic equationExample
  • Solve the simultaneous equations by drawing graphs.
  • y - 2x = 1
  • y = x2 - 2
[Image: 0e57516d72ac2310ec6e172344772897f05acae9.gif]
04-25-2017 07:49 PM
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Damian Offline
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RE: Simultaneous Equation

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04-25-2017 09:35 PM
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