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 8 hours of burning, a candle has a height of 2

Question 970261: 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 8 hours of burning, a candle has a height of 26.4 centimeters. After 26 hours of burning, its height is 22.8 centimeters. What is the height of the candle after 20 hours?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Plot the height, on the verical axis and
hours, on the horizontal axis
You are given 2 points on the line in the format
( t , h )
( 8, 26.4 )
( 26, 22.8 )
----------------------
Find equation of the line using point-slope formula

--------------------
Find after hrs

The height is 24 cm after 20 hrs
-------------------------------
check the equation:
does it go through ( 8, 26.4 ) ?

OK -you can check other point

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