anonymous
  • anonymous
Determine value of k so that following system has one solution. x^2 -2x-y+4= 0 y = kx+3
Mathematics
jamiebookeater
  • jamiebookeater
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e.mccormick
  • e.mccormick
The first equation is a parabola of soe sort. So what you need to do is find where it and the line only touch at one point.
e.mccormick
  • e.mccormick
|dw:1434160216012:dw| for example.
anonymous
  • anonymous
i used system of equation to get x^2 -2x-kx-3+4 = 0 But what do i do next though

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anonymous
  • anonymous
it has something to do with b^2 - 4 a c = 0
e.mccormick
  • e.mccormick
Well, what is the vertex of that parabola at? I ask because if you are only going to touch one point, then the vertex or near it are likely unless the line has a bunch of slope...

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