Posted by **luke** on Sunday, January 28, 2007 at 9:58am.

A rational function that passes through (0,0) and (4, 8/7) has the x-axis as a horiztonal asympotote. It also has 2 vertical asymptotes x=3, x=-3.

I understand that to set it up, it is

y= ax+b / (x+3)(x-3).

I don't understand how to solve for a and b.

Put in the points. You have two points, and two unknowns.

(0,0)

0= 0+b / (0+3)(0-3).

Solving this easy: b is zero.

Now that you have b, next point

y= ax / (x+3)(x-3). ( 8/7, 8/7)

8/7= a 4

solve for a.

thank you so much for your help

## Answer This Question

## Related Questions

- rational functions - A rational function that passes through (0,0) and (4, 8/7) ...
- rational functions... PLEASE HELPPPPP - A rational function that passes through...
- Harrisburg Area Community College - find the equation of a rational function ...
- Gr.11 - Rational functions graphing. - 1. Identify a rational function whose ...
- Math - Verify these answers :] Would be thankies~ 1. Determine the intervals in ...
- math - hello, i have some question about rational functions. 1) are there any ...
- Math - All rational functions can be expressed as f(x) = p(x)/q(x), where p and ...
- Math - find a rational function that satisfies the given conditions vertical ...
- ****college algebra…radical functions**** - Create a rational function such that...
- Pre-Calculus - I want to learn how to find the domain, holes, x-intercepts, y- ...

More Related Questions