Posted by **stressed** on Sunday, May 13, 2007 at 10:33pm.

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.

## Answer this Question

## Related Questions

- Pre-Algebra - If y varies directly with x, find the constant of variation with x...
- algebra1 - M varies directly with n; m=144 when n=8. What is the constant of ...
- Variation - I have few questions that I need checked please and could you help ...
- Pre-Calc - 1.) Suppose that y varies directly as x. If y is 5 when x is 30, the ...
- algebra - Find the variation constaant and an equation of variation where Y ...
- Algebra II - 1. If y varies directly as x, and y=30 when x=4, find the constant ...
- math - t varies directly as the square root of l. If l=81, then t=10 what is the...
- Math - This is regarding direct variation. y varies directly as the square of R...
- Math - DIRECT VARIATION 1. a is directly proportional to b.If a=15,then b=9 2. m...
- Check my answers. Algebra - Can you please check my answers? Thanxs! Write an ...

More Related Questions