SOLUTION: Select the x-coordinate of the vertex of the parabola defined by the function f(x)=-3x^2+7x+5 Thank you very much.

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: Select the x-coordinate of the vertex of the parabola defined by the function f(x)=-3x^2+7x+5 Thank you very much.      Log On


   

Question 887350: Select the x-coordinate of the vertex of the parabola defined by the function f(x)=-3x^2+7x+5
Thank you very much.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
-3x^2+7x+5 is in the form ax^2 + bx + c

a = -3
b = 7
c = 5


x = -b/(2a)

x = -7/(2*(-3))

x = 7/6 which is the x coordinate of the vertex