SOLUTION: I need to find a,b,and c. If the function opens upward or downward and if the function has a minimum or a max. y=xsquared+x-5

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: I need to find a,b,and c. If the function opens upward or downward and if the function has a minimum or a max. y=xsquared+x-5      Log On


   

Question 170865: I need to find a,b,and c. If the function opens upward or downward and if the function has a minimum or a max. y=xsquared+x-5
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
y=x%5E2%2Bx-5 Start with the given equation.


Notice we have a quadratic equation in the form of y=ax%5E2%2Bbx%2Bc where a=1, b=1, and c=-5


Since a%3E0, which means that "a" is positive, this means that the parabola opens upwards and that the function has a minimum.