Tuesday

September 2, 2014

September 2, 2014

Posted by **sophia** on Saturday, November 7, 2009 at 11:00pm.

Write and equation relating y (value of the car $) to x (age of car).

Is it y-23,000=-2500(2)-5 ??

- math -
**Reiny**, Saturday, November 7, 2009 at 11:12pmso you are looking for a linear relation in the form y = mx + b

where you are given two points

(2,23000) and (5,15500)

so slope = (15500-23000)/(5-2)= 7500/3

= -2500

so y = -2500x + b

sub in the first point

23000 = -2500(2) + b

b = 28000

finally :

y = -2500x + 28000

**Answer this Question**

**Related Questions**

math - you purchase an suv for $26,000. A year later the car is worth only $24,...

math - mr jones buys a new car for $50,000. the car decreases in value at the ...

math - The value of a new car decreases exponentially.Suppose your mother buys a...

Algebra - Three years after purchase, a car is estimated to be worth $24,000. At...

Advanced Functions - he value of a new car depreciates at a rate of 12% per year...

MATH - a rule of thumb used by car dealers is that the trade in value of a car ...

MATH - NEED EXTREME HELP!@#$%^a rule of thumb used by car dealers is that the ...

algebra - the price of a car depricates over time at a rate of approximately 18...

math - The value of a $20,000 car decreases every, t. The equation below model ...

math - Help - The value of a $20,000 car decreases every year, t. The equation ...