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Need help with a problem solving question!

  1. Nov 1, 2008 #1
    1. The problem statement, all variables and given/known data

    Two lines given by the following pair of equations. If the lines are parallel, find the value of k.

    Y-kx = -5x+9 Y+2x = 4(kx-2)

    2. Relevant equations

    Im not exactly sure what i need to do this.

    3. The attempt at a solution

    Like i said above, I'm not sure what i have to do to figure this out? At first i was thinking comparison but i don't think thats going to work.

    This question is for a problem solving assignment our teacher gave us, so she never really taught us a strategy for it.

    Any help would be appreciated :)
  2. jcsd
  3. Nov 1, 2008 #2


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    Homework Helper
    Gold Member

    If two lines are parallel, they have the same slope. Try putting both equations into the form y=mx+b so that you can easily compare the two slopes....what values of k are they equal for?
  4. Nov 1, 2008 #3
    Thanks, ill try that!
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