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For the function

y = 9x2 + 6x + 2,
at the point
x = 7,
find the following.
(a) the slope of the tangent to the curve


(b) the instantaneous rate of change of the function

1 answer

y'(x) = 18x+6, so
y'(7) = 132

tangent slope and rate of change are the same
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