SOLUTION: the vertex of this parabola is at (-2,-3)when the y value is -2 and the x value is -5 what is the coefficient of the squared term in the parabola's equation?

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: the vertex of this parabola is at (-2,-3)when the y value is -2 and the x value is -5 what is the coefficient of the squared term in the parabola's equation?      Log On


   

Question 810846: the vertex of this parabola is at (-2,-3)when the y value is -2 and the x value is -5 what is the coefficient of the squared term in the parabola's equation?
Answer by erica65404(394) About Me  (Show Source):
You can put this solution on YOUR website!
y=a%28x-h%29%5E2%2Bk
a is the coefficient
(h,k) is the vertex
y=a%28x%2B2%29%5E2-3
plug the x and y values into the equation to find a.
-2=a%28-5%2B2%29%5E2-3
-2=9a-3
1=9a
a=1%2F9
The coefficient is 1/9.