Graph the f(x) that passes through the point.
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Graph the f(x) that passes through the point.

[From: ] [author: ] [Date: 11-05-12] [Hit: ]
f(x)) is 2 x + 2, what is f( 2 )?Plug in (6,Therefore,Thus,Now you can work out f(2).......
Given that the graph of f(x) passes through the point ( 6, 9 ) and that the slope of its tangent line at (x,f(x)) is 2 x + 2, what is f( 2 )?

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Given : f '(x) = 2x + 2
Integrate to get : f(x) = x^2 + 2x + C
Plug in (6, 9) to get : 9 = 6^2 + 2*6 + C
Therefore, C = -39
Thus, f(x) = x^2 + 2x - 39
Now you can work out f(2).
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