Monday

September 1, 2014

September 1, 2014

Posted by **Shin** on Thursday, April 28, 2011 at 2:43pm.

W (pounds 2 6 9 15

D (inches) 1.6 4.8 7.2 12

(a.) Do the data represent direct or inverse variation?

Explain. (b.) Find an equation that models the data.

(c.) How far will the spring stretc if an 11- pound weight is hung on it, as depicted in the figure?

- College Math -
**MathMate**, Thursday, April 28, 2011 at 3:30pm(a) when the ratios are proportional they represent direct variation.

For example: 1.5/2 = 4.8/6 = 7.2/9 = 12/15 = 0.8

Guess at this point you can figure out the equation required for (b).

(c) substitute W=11 into the equation in (b).

Post for checking if you wish.

**Related Questions**

College Algebra - Hooke's Law states that the distance a spring stretches is ...

Math-Hooke's law - Using Hooke's Law (F=kx) determine: A) A weight of 5 pounds ...

physics - When a 2.50-kg object is hung vertically on a certain light spring ...

Physics - When a 2.00-kg object is hung vertically on a certain light spring ...

Physics - When a 3.00-kg object is hung vertically on a certain light spring ...

physics - When a 2.60-kg object is hung vertically on a certain light spring ...

physics - 1)An elastic material has a length of 36cm when a load of 40N is hung ...

physics - When a 4.48 kg mass is hung vertically on a certain light spring that ...

Math - The distance a spring stretches is directly proportional to the force ...

Algebra 1 - The amount a spring will stretch S is proportional to the force (or ...