1. P.6 Zeros of Functions

2. Definition:
Zeros of a function – where the height of the graph is zero.
Comparable to x-intercepts on the real number system.
To find x-intercepts…replace “y” with zero.
To find zeros…replace “y” with zero.

3. Examples:
Find the zeros of the following functions.
Replace the y with zero.
f(x)
= 3x - 2
Where is the y?
x = 2/3
Solve for x.

4. Examples:
Find the zeros of the following functions.
Replace the y with zero.
f(x)
= x2 + 4x
Where is the y?
x = 0 & x = -4
Solve for x.

5. Examples:
Find the zeros of the following functions.
Replace the y with zero.
f(x)
=  3x - 4
Where is the y?
x = 4/3
Solve for x.

6. Examples:
Find the zeros of the following functions.
Replace the y with zero.
f(x)
= 3x – 2
x - 7
Where is the y?
x = 2/3
Solve for x.

7. Remember:
The zeros to all the previous questions are the places where their graphs cross over the x-axis.