Charla wants to determine the vertex of the function f of x is equal to x squared minus 18 x plus 60 by changing the function into vertex form. Which statement about the vertex of the function is true?
Answer
A
The y -coordinate of the vertex is greater than the y -intercept.
B
The y -coordinate of the vertex is positive.
C
The x -coordinate of the vertex is greater than the y -coordinate.