Question 1071964
x time in hours
y candle height

Description gives two points (x,y):
(11,26.8) and (23, 24.4).


Slope, {{{-0.2}}};


{{{y-26.8=-0.2(x-11)}}}

{{{highlight(y=-0.2x+29)}}}


Question is, what is candle height, y, after 20 hours?
Let x=20 and evaluate y.