Posted by Penny on Friday, July 13, 2012 at 1:12pm.
A boat is worth $7,000 when it is 5 years old and $2,000 when it is 10 years old. What is the slope intercept equation?

algebra  Steve, Friday, July 13, 2012 at 2:27pm
You have two points: (5,7000) and (10,2000)
the twopoint equation for the line is thus
(y7000)/(x5) = (20007000)/(105)
or, after rearranging things a bit:
y = 1000x + 12000
That is, the value started at $12,000, and depreciates $1000/year
Answer This Question
Related Questions
 math  The value of a car decreases at a constant rate as it grows older. When ...
 math  The value of a car decreases at a constant rate as it grows older. When ...
 finance  You want to save $1,000,000 for your retirement (under 40 years old) ...
 Economics  Given the following data, use present worth analysis to ﬁnd ...
 algebra  child is now 3 years old  dad opens account with $10,000 it earns 4.5...
 Math  2x represents that Clyde is twice (2 times) as old as Bonnie. 6 years ...
 algebra  A person is 3 times as old as aonther person but in 15 years she will ...
 Math  The depreciation rate, r, for a $50,000 news car is given by the function...
 Math  The equation V = 2000t + 20,000 describes the value in dollars of a ...
 EASY Math  The equation V = 2000t + 20,000 describes the value in dollars of a...
More Related Questions