Posted by **alex** on Tuesday, October 6, 2009 at 3:25pm.

I need the answers and the work shown steb by step today pls^^

For each direct variation find the constant of variation.Then find the value of y when x= -5

1.y=2 whne x=7

2.y=-2 when x=2

3.y= 17 when x=-4

y varies directly with x.

1.if y=6 when x=2,find x whn y=12

2.if y=7 when x= -3,find y when x= -1

- Math -
**drwls**, Tuesday, October 6, 2009 at 4:24pm
If there is a direct variation, then y is proportional to x. This can be written y = kx. Use the information you are given to determine k.

1. If y = kx and y=2 when x = 7, then

2 = 7k, and

k = 2/7, so

y = (2/7)x

Whe x = -5, y = -10/7

Do the others the same way.

1. If y=6 when x=2, then k=3 and y = 3x.

When x=12, y = ?

- Math -
**alex**, Tuesday, October 6, 2009 at 6:18pm
Well thanks but in the other questions im guessing that y stays the same so 1. will be equal to 1/2 and 2.-7/1 correct me if im wrong pls but is also suspicious because it says y varies direclty with x idk what that means

## Answer this Question

## Related Questions

- Algebra 2 Honors - Hey, we recently started a topic in class that I don't ...
- Math - I am confused with this problem, A 14.1 oz box of cereal costs $2.89. ...
- Math - I am doing Direct Variation in math. I dont understand how to do it. It ...
- Math - Is -12x = 6y a direct variation? If so what is the constant of variation...
- algebra - Tell whether equation represents direct variation. If so, identify the...
- Math- steve or ms. sue - does the data in the table represent a direct variation...
- Algebra 2 - Is the relationship between the variables in the table a direct ...
- Algebra Variation Constant - What does this mean? Do I graph this or what? Find ...
- Math - how do you find the constant of variation k for the direct variation? for...
- algebra 1 8th Grade - Find the constant of variation for the direct variation. F...

More Related Questions