Posted by **Cindy** on Tuesday, February 22, 2011 at 7:27pm.

I am having ahard time solving this problem and am not good with story problems, could someone please help. Can you show how you would write out problem.

The average price of an acre of U.S farmland was $1132 in 2001. In 2006, the price of an arce rose to approximately $1657.

a. Write two order pairs of the form (year, price of acre)

b. find the slope of the line through the two points

Explain the meaning of the slope as a rate change.

- Math -
**Helper**, Tuesday, February 22, 2011 at 9:11pm
In 2001, aver. price of an acre = $1132

In 2006, aver. price of an acre = $1657

a. 2001 = 0, 1132; 2006 = 5, 1657

2001 would be the starting year and 2006 would be 5 years later

The ordered pairs would be,

(0,1132), (5,1657)

b. slope

m = y2 - y1/(x2 - x1)

m = 1657 - 1132/(5 - 0)

m = 525/5

m = 105

The equation of the line with

slope m = 105, and point (5,1657)

y = mx + b

y = 105x + b

1657 = 105(5) + b

1657 = 525 + b

b = 1132

Therefore, the equation is

y = 105x + 1132

Explain the meaning of the slope as a rate change.

See this website for an excellent explanation.

http://www.purplemath.com/modules/slopyint.htm

## Answer This Question

## Related Questions

- College Math II - Show a complete solution to each problem. Find the exact ...
- Math: is it? is it not? - Is this math problem hard? - There are 12 brothers ...
- algebra - Abby spent 5 1/2 minutes solving 5 math problems on her homework. How ...
- algebra 1 - Can someone please help me with this inequality problem -3-8>(4x+...
- Math - Write a story for the following multiplication problem : 16x5 Derrick ...
- algebra - I am having a hard time solving my problem 2ã20 + 5 ã 80 - 7 ã5 Can...
- algebra - I am having a hard time solving my problem 2ã20 + 5 ã 80 - 7 ã5 Can...
- Math - Can someone please work out the steps in solving this elimination problem...
- Math problem - having problems working this problem out please solve 49 5/2
- 3rd grade - Good evening ~ I have 2 questions. Kelsey was assigned math homework...

More Related Questions