SOLUTION: in 1920, the record for a certain race was 46.9 sec. in 1940, it was 46.5 sec. Let R(t)= the record in the race and t= the number of years since 1920. fine the linear function that

Algebra ->  Graphs -> SOLUTION: in 1920, the record for a certain race was 46.9 sec. in 1940, it was 46.5 sec. Let R(t)= the record in the race and t= the number of years since 1920. fine the linear function that      Log On


   

Question 421103: in 1920, the record for a certain race was 46.9 sec. in 1940, it was 46.5 sec. Let R(t)= the record in the race and t= the number of years since 1920. fine the linear function that fit the data R(T)=
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
in 1920, the record for a certain race was 46.9 sec. in 1940, it was 46.5 sec. Let R(t)= the record in the race and t= the number of years since 1920. fine the linear function that fit the data R(T)=
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You have 2 points: (0,46.9) and (20,46.5)
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slope = 0.4/-20 = -0.02
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Form: R(t) = mx + b
R(t) = -0.02x+46.9
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Cheers,
Stan H.
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