Posted by **joanieday** on Friday, March 25, 2011 at 3:57pm.

How do I read the equation (function) y=-0.03x^2+0.14x+1.43?

Do I have to complete the square to find the vertex, max., min., etc.? This function is part of a word problem that I am trying to do. I would appreciate any help.

- Algebra -
**Lina**, Friday, March 25, 2011 at 10:22pm
Well, you could multiply everything by 100 to get an easier function:

y=-3x^2+14x+143

in which you could try and use the quadratic theorem

[-b +/- sqrt(b^2-4ac)]/2a

Giving you:

-14 +/- sqrt(196-(-1716)/-60

[-14 +/- sqrt(1912) ]/-6

You cant simplify too much. But you get the idea from here. Is this the answer you were looking for?

## Answer this Question

## Related Questions

- algebra - determine the vertex for the function y=2x^2+5x-3 for y = ax^2 + bx + ...
- Algebra please help - f(x)=1/3(x+7)^2+4 find the vertex,the line of symmetry, ...
- algebra - solve the polynomial y=2x^2-4x+1 For Further Reading algebra - Reiny, ...
- Algebra2 - Complete parts a – c for each quadratic function: a. Find the y-...
- algebra - Given the following function, find: (a) vertex (b) axis of symmetry (c...
- Math I have tried it and tried it - I have tried several times to find the ...
- Math 117 - Find the vertex, line of symmetry, and the max/min value of f(x). ...
- Math - Complete the square to find the vertex of each quadratic function. State ...
- math algebra trig - For the graph of each function, find an equation of the line...
- Math - I need an expiation on a math concept, because I know the right answer, I...

More Related Questions