1. In vertex form, f(x) = a(x – h)2 + k, what does the k stand for?
A. y-coordinate
C. x-intercept
B. x-coordinate
D. y-intercept

i would say its the (x-coordinate)

Step-by-step explanation: f (x) = a(x - h)2 + k, where (h, k) is the vertex of the parabola. (h, k) is the vertex of the parabola, and x = h is the axis of symmetry.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

-2 is the right