Quadratics

Zeroes or X-Intercepts

The point where the graph crosses the X Axis

 

Since the equations are already factored, it is easy to find the X- Intercept. As a result of the x intercept coordinate always having a 0 as the y value, all we have to do is solve the equation:

0=(x-r)  and 0=(x-s)

 

For Example:

y=(x-4)      (x+5)

 

0=x- 4    0=x+5

4=x      -5=x

 

Question

 

What are the X intercepts in this factored form equation y=(x+8)(x+2)

 

 

 

 

Solution