### Home > CALC > Chapter 5 > Lesson 5.2.4 > Problem 5-99

5-99.

This is Hana's Definition of the Derivative. Notice that Δ*x* is equivalent to *h*.

*f*(*x*) = 5 − 3*x* where *c* = 1

so *f* '(*x*) = −3 and *f* '(1) = −3

See hint in part (a).

This is Ana's Definition of the Derivative.