Homework Help: Algebra

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 - Given the following function, find: (a) vertex (b) axis of symmetry (c...
Algebra please help - f(x)=1/3(x+7)^2+4 find the vertex,the line of symmetry, ...
Math 117 - Find the vertex, line of symmetry, and the max/min value of f(x). ...
Algebra Functions - I cannot for the life of me remember how to do this- Find ...
Math I have tried it and tried it - I have tried several times to find the ...
math algebra trig - For the graph of each function, find an equation of the line...
college algebra - Given the following quadratic equation, find;? a. the vertex ...
college algebra - Given the following quadratic equation, find a. the vertex b. ...
Algebra2 - Complete parts a – c for each quadratic function: a. Find the y-...

For Further Reading

First Name:
School Subject:
Answer: