anonymous
  • anonymous
Pre Calc: For what value of k will the graph of 6x + ky = 6 be perpendiculuar to the graph of 2x – 6y = 12? A.1/2 B.)4 C.)2 D.)5
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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lgbasallote
  • lgbasallote
first...solve for y in terms of x in 2x - 6y = 12 do you know how?
anonymous
  • anonymous
@lgbasallote y=x/3-2 correct?
lgbasallote
  • lgbasallote
right

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lgbasallote
  • lgbasallote
now...solve for y in terms of x in 6x + ky = 6
anonymous
  • anonymous
y=6/k-6x/k
anonymous
  • anonymous
@lgbasallote
lgbasallote
  • lgbasallote
right. so that has a slope of 6/k for it to be perpendicular to y = x/3 - 2, the slope should be -3 agree?
anonymous
  • anonymous
@lgbasallote yessss
lgbasallote
  • lgbasallote
wait... i saw wrong
lgbasallote
  • lgbasallote
the slope of that equation is -6/k
lgbasallote
  • lgbasallote
so now.. equate -6/k to -3 and solve for k \[\huge -\frac 6k = -3\]
anonymous
  • anonymous
k=2 @lgbasallote thank you <3
lgbasallote
  • lgbasallote
welcome

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