# Homework Help: Algebra 2

1. Apr 4, 2004

### mustang

Problem 1.
Consider the equation y=a(x-r_1)(x+r_2)
Write the equation of the axis of symmetry.

2. Apr 5, 2004

### Chen

That is just a simple parabola:
$$y = ax^2 - ax(r_1 - r_2) - ar_1r_2$$
Where is the 'vertex' of this parabola? What is its X coordinate?

3. Apr 5, 2004

### mustang

How do you get the axis of symmetry..vertex..etc...

How would you get the axis of symmetry: x=-b/2a from b=-ax(r_1-r_2) and a= 1 or just a???

4. Apr 5, 2004

### mustang

How do you get the axis of symmetry..vertex..etc...

How would you get the axis of symmetry: x=-b/2a from b=-ax(r_1-r_2) and a= 1 or just a???

5. Apr 5, 2004

### mustang

How do you get the axis of symmetry..vertex..etc...

How would you get the axis of symmetry: x=-b/2a from b=-ax(r_1-r_2) and a= 1 or just a???

6. Apr 5, 2004

### mustang

How do you get the axis of symmetry..vertex..etc...

How would you get the axis of symmetry: x=-b/2a from b=-ax(r_1-r_2) and a= 1 or just a???