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Help with line equations?
asked
Jul 26, 2015
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Help with line equations?
Mathematics
high-school
LeffelMania
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LeffelMania
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1
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First question
now we have to replace the y of curve by the y of line, therefore
we can multiply each member by
Now we have to find the roots of this funtion
Sum and produc or Bhaskara
Then we find two axis
now we replace this values to find the Y, we can replace in curve or line equation, I'll prefer to replace it in line equation.
Therefore
_______________________________________________________________
The second question give to us
We just have to replace the value then we'll get a linear system.
point 1
point 2
then our linear system will be
I'll multiply the second line by -1 and I'll add to first one
therefore we can replace the value of a, at second line
then our function will be
_________________________________________________________________
The third one, we have
This resolution will be the same of our first question.
Let's replace the y of curve by the y of line
therefore
now we have to find the roots of this function.
put x in evidence
then
our points will be
I hope you enjoy it ;)
Felix Turner
answered
Aug 1, 2015
by
Felix Turner
8.4k
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