need help with linear regression _ _||| i keep getting the slope right but the y-intercept is always wrong(pic will be included)

Question

anonymous · Answer

attachment

anonymous · Answer

everything else is easy for me just finding the equation is hardest

stamp · Answer

Not a type of question I am familiar with. Good luck finding a solution.

anonymous · Answer

thanks

anonymous · Answer

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agent0smith · Answer

First, tell us what numbers you *are* getting for slope and the intercept.

agent0smith · Answer

Just from estimation, the y-intercept looks to be about 850. What were you getting?

agent0smith · Answer

Oh the y-intercept looks like it should actually be where the 1999 is, as x is the number of years after 1999 (ie at 1999, x = 0). Maybe 865 (millions of people) for the intercept.

agent0smith · Answer

The thick red line is an approx. line of best fit. The little purple line is showing the approx. y-intercept, because x = 0 at 1999.