We have to find the tangent to the curve y = x^3 - 7x^2 + 14x - 8 at the point where x=1
At x = 1, y = 1 - 7 + 14 - 8 = 0.
The slope of the tangent to the curve at x = 1 is the value of y' at x = 1
y' = 3x^2 - 14x + 14
At x = 1 it is 3 - 14 + 14 = 3
The equation of the tangent is (y - 0)/(x -1) = 3
=> y = 3x - 3
=> 3x - y - 3 = 0
The equation of the tangent is 3x - y - 3 = 0
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