Question

use the graph of the function f shown to answer parts (a)-(n). (a) find f(-21) and f(-6). f(-21)= - 8 f(-6)= 8 (b) find f(18) and f(0). f(18)= 8 f(0)= - 4 (c) is f(6) positive or negative? positive negative (d) is f(-21) positive or negative? positive negative (e) for what value(s) of x is f(x)=0? x = (use a comma to separate answers as needed.)

Explanation:

Step1: Locate x - values on graph

To find when f(x)=0, look for the x - coordinates of the points where the graph of the function intersects the x - axis.

Step2: Identify intersection points

The graph intersects the x - axis at x=-18, x = - 3, x = 12.

Answer:

-18, - 3, 12