anonymous
  • anonymous
example of an equation in two variables with 0 solutions.
Mathematics
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anonymous
  • anonymous
example of an equation in two variables with 0 solutions.
Mathematics
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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anonymous
  • anonymous
PLEASE HELP
dan815
  • dan815
um
dan815
  • dan815
2x+y=4x+2y+6

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dan815
  • dan815
?
anonymous
  • anonymous
Haaha i really don't even know but thank yo, can you help me out with another one
dan815
  • dan815
wait
dan815
  • dan815
ill help u -.-
dan815
  • dan815
u know equation of lines
dan815
  • dan815
y=2x y=2x+1 lets say these 2 equations of lines
anonymous
  • anonymous
okay
dan815
  • dan815
can u see the slopes of those 2 liens are the same
anonymous
  • anonymous
yea ?
dan815
  • dan815
okay these 2 lines have same slope but different y intercept so they will not intersect, which means no solution
dan815
  • dan815
you can form an equation with these 2 equations put together
anonymous
  • anonymous
ohhhhhhhh thats makes sense now
anonymous
  • anonymous
so how can i find an equation that has two variable but only one answer >
dan815
  • dan815
y=2x y=2x+1 --------- y-2x=0 y-2x+1=0 ----> multiply this by 2 just for kicks y-2x=0 2y-4x+2 =0 now equation the 2 zero expressions and we get y-2x=2y-4x+2 here have have an equation which we know cannot be satisfied
dan815
  • dan815
okay so similiar to this, now u want to take any 2 lines with different slopes then u know these 2 lines will intersect
dan815
  • dan815
y=2x y=3x but lets rewrite this so we sustain the 2 variables Y-2x=0 y-3x=0 now equation the 0 expressions y-2x=y-3x
dan815
  • dan815
equate*
anonymous
  • anonymous
i dont get it ? @dan815
dan815
  • dan815
okay u know 2 lines with different slopes always meet
dan815
  • dan815
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anonymous
  • anonymous
yea
dan815
  • dan815
so take any 2 line equations with different slope
anonymous
  • anonymous
and theyll have the same answer ?
dan815
  • dan815
yeah but re arragen it so u still have the 2 variables
dan815
  • dan815
i was thinking uhh.. what grade are u in... have u learnt parabolas
anonymous
  • anonymous
im so confused
dan815
  • dan815
because u can do this with parabolas too
dan815
  • dan815
|dw:1444028777898:dw|
anonymous
  • anonymous
i dont rememebr to much about them
dan815
  • dan815
ok nvm
anonymous
  • anonymous
can you exaplain it to me again cause im really confused
dan815
  • dan815
ya so take 2 line equations with different slope
dan815
  • dan815
y=2x y=3x
dan815
  • dan815
now you put these together so that u still have 2 variables in your expression
dan815
  • dan815
y-2x=0 y-3x=0 rewrite both equation like above now equate the 0 s together 0=0 y-2x=y-3x
dan815
  • dan815
there you have an equation with 2 variables that can only have 1 solution

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