algebra

posted by .

I have no clue what to do here can you tell me how to figure this?

If y varies directly with x, and y = 500 when x = 200, find the constant of variation k.

Whenever you have a statement such as
"....y varies directly with x..."

you can write it as an equation y = kx, where k is some constant

so in your case they give you x=200, y=500
sub those values into the equation and you can solve for k

This is an example of a direct variation.
You can also have an "inverse variation", such as...
"The Time taken for a trip varies inversely with the speed"

then your equation would be Time = k(1/speed), again where k is some constant.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra1

    M varies directly with n; m=144 when n=8. What is the constant of variation k?
  2. Variation

    I have few questions that I need checked please and could you help me with the last question?
  3. Algebra Variation Constant

    What does this mean? Do I graph this or what?
  4. algebra

    Find the variation constaant and an equation of variation where Y varies directly as X and Y = 72 hen X = 8 The variation constant is K = ?
  5. algebra

    find the variation constant and an equation of variation where y varies directly as x and y=35 when x=5 the variation constant is k=
  6. Algebra

    Find the variation constant and an equation of variation where Y varies directly as X and Y=60 when X=10 k=variation constant y=equation of variation Still do not understand..please..
  7. algebra

    Find the variation constant and an equation of variation where y varies directly as x and y =4 when x=1. the variation constant is K= the variation constant is y =
  8. Algebra 2 Honors

    Hey, we recently started a topic in class that I don't understand well, I just want to post 6 of the problems and ask if they're right or not (some of them I have no idea how to do). 1. If a varies directly as b and b = 18 when a = …
  9. Pre-Algebra

    If y varies directly with x, find the constant of variation with x = 4 and y = -24 If y varies inversely with x, find the constant of variation with x=5 and y = 10 If y varies directly with x, and y = 35 when x = 5 , find x when y …
  10. Algebra worksheet

    Hello. My algebra teacher gave me this worksheet last week and everyone had to bring it yesterday and I haven't done it yet. Can someone please help me. He said Friday is the last day or he's going to take away some points. I've been …

More Similar Questions