Friday

November 28, 2014

November 28, 2014

Posted by **Sarah** on Tuesday, May 12, 2009 at 2:44pm.

Find the quadratic function y=ax^2+bx+c

1) 4a+2b+c=14

2) a+b+c=-1

3) 9a+3b+c= 35

equation 1&2 = 3a + b = 13

equation 1&3 = -5a +5b = -21

i know you take those two equations now

3a + b = 13

-5a - 5b = -21

multiply the top by 5 and the bottom equation by 3

15a + 5b = 65

-15a - 15b = -63

that

-10b = 2

but its suppose to come out to a whole number what am i doing wrong???

**Answer this Question**

**Related Questions**

Please help! quadratic equation - Given the following quadratic equation find. a...

math help please... - 1.Explain how to find the equation of the vertical ...

MATH - (2,14),(1,-1),(3,35) Find the quadratic function y=ax^2+bx+c 1) 4a+2b+c=...

Math - The graph of a quadratic function has vertex(3,-4) and passes through the...

Math - The graph of a quadratic function has vertex(3,-4) and passes through the...

Math - I am stumped on this problem could someone please help? Give the ...

Math - I am stumped could someone please explain this problem? Give the ...

math please - 1.Give a linear function with its zero at x=a, what is the ...

math - State the solutions, or estimated solutions, to each quadratic equation ...

MATH - State whether each equation in Exercises 25–30 represents a linear, ...