# What are the vertex, axis of symmetry, maximum or minimum value, domain, and range of the function, and x and y intercepts for #y=x^2+12x-9#?

##### 1 Answer

May 12, 2015

x of axis of symmetry and vertex:

x = -b/2a = -12/2 = -6. y of vertex:

y = f(-6) = 36 - 72 - 9 = -45

Since a = 1, the parabola opens upward, there is a minimum at

(-6, 45).

x-intercepts:

Two intercepts: