SOLUTION: I can not figure this problem out can someone help pls Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5� C

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Question 994534: I can not figure this problem out can someone help pls
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5� C after 3 minutes; 90� C after 5 minutes, 84.8 C after 9 minutes; 70.2� C after 18 minute; 54.4� C after 30 minutes; 42.5�C after 37 minutes; and 24.9� C after 48 minutes. Perform a linear regression on this data to complete the following items.
Write the equation of the best-fitting line.

Answer by MathLover1(20850) (Show Source):
You can put this solution on YOUR website!
plot your points, let time be and temperature
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To calculate the slope, pick two points on the line, and calculate the slope as:
(your slope should have a negative value).
The equation of the line is then
where
I would pick these two points on the line:
(,)
(,)

so, equation is
use one point to find