SOLUTION: Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 14 hours of burning, a candle has a height of

Question 1148037: Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 14 hours of burning, a candle has a height of 18.2 centimeters. After 31 hours of burning, its height is 14.8 centimeters. What is the height of the candle after 21 hours?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
You are given 2 points on a straight line
( 14, 18.2 )
( 31, 14.8 )
Use the general point-slope formula to get the equation
-----------------------

------------------------------
Now find at the point ( 21, h )

cm
--------------------------
check the equation:
( 14, 18.2 )

You can check the other point

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