millsemily
  • millsemily
The value of y varies directly with x. What is k the constant of variation for this function, and what is y for the given value of x? y= -1/2 when x=6. Find y when x=-3 Can someone explain this as they solve? Because I have a lot more of them, and I'd like to do the rest on my own :) Thanks!
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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rishavraj
  • rishavraj
as it varies directly so y = kx
rishavraj
  • rishavraj
get "k" from above equation by plugging given value of y and x
imqwerty
  • imqwerty
so y varies directly with x y ∝ x now removing the proportionality sign '∝' and putting constant k we get y=kx we know when y=-1/2 , x =6 so -1/2 =k(6) so k=-1/12

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millsemily
  • millsemily
And the other is 1/4 , right?
imqwerty
  • imqwerty
yea
millsemily
  • millsemily
Thanks, wasn't as hard as I was making it xD
imqwerty
  • imqwerty
( ͡° ͜ʖ ͡°)

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