Use the limit process to find the slope of the graph of $6 x - 4 x ^ { 2 }$ at $( 7 , - 154 )$.
A) $- 2$
B) 62
C) 34
D) 56
E) $- 50$

Question

Quizplus · Accepted Answer

The slope of the graph of a function at a given point can be found using the derivative of the function. The derivative of $6x - 4x^2$ with respect to $x$ is $6 - 8x$. Substituting $x = 7$ into this derivative gives $6 - 8(7) = 6 - 56 = -50$.

Use the Limit Process to Find the Slope of the Graph