### Home > CALC > Chapter 3 > Lesson 3.2.2 > Problem 3-60

3-60.

*f* '(*x*) = −21*x*^{6} − 6

Refer to hint in part (b).

*m* is a constant. What is the slope of the a

horizontal line *y* = *m*?

3-60.

*f* '(*x*) = −21*x*^{6} − 6

Refer to hint in part (b).

*m* is a constant. What is the slope of the a

horizontal line *y* = *m*?