Question 608375: A hippopotamus weighed 700 lb at the age of 1 and 1,900 lb at the of 3, and 2,500 at the age of 4 what is the equation for the trend line ?
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
You have three collinear points so you can model the data with a straight line and get a perfect  , though depending on that to justify extrapolation is an error.
You are given three ordered pairs, (1,700), (3,1900), and (4,2500)
Use the slope formula
Check for collinearity by using the slope formula with a different pair of points:
Same slope, collinearity assured.
Use the point-slope form of a line to create an equation:
)
put it in slope intercept form:
John
My calculator said it, I believe it, that settles it
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