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Find an equation of the tangent line to the graph of y = g(x) at x = 4 if g(4) = −5 and g'(4) = 3.
y =


If the tangent line to y = f (x) at (9, 9) passes through the point (0, 8), find f(9) and f '(9).

f (9)=f '(9)=