Sunday

September 21, 2014

September 21, 2014

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

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 9:11pmIn 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 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 220 + 5 80 - 7 5 Can...

algebra - I am having a hard time solving my problem 220 + 5 80 - 7 5 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...

fractions - my teacher gave us some fraction problems for homework, but I'm ...