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Suppose that the only information we have about a function f is that f (3) = 2 and the graph of the derivative is as shown. E:t:r>0. The estimated value {(2.9) using linearization may be expressed as f (2.9) = :2 Find a + (I. Hint: The slope of the tangent line is an integer. A line tangent to the graph of {(x) = #4 1' Is perpendicular to 2x y + 3 = 0. The point of tangency is at P(a, b). Find a + b