Answer:
(a)The x-intercepts are 3, -4 and 1.
(b)f(x)=-0.5
Explanation:
Given the function:

- The x-intercepts occurs when y=0
- The y-intercepts occurs when x=0
x-Intercepts
When y=f(x)=0

The x-intercepts are 3, -4 and 1.
y-intercepts
When x=0

The y-intercept is -0.5