Answer:
x = 5 and ( 5 , − 9 )
Explanation:
The equation of a parabola in vertex form is.
2 2 y = a ( x − h ) 2 + k 2 2
Where ( h , k ) are the coordinates of the vertex and a is a multiplier
f ( x ) = ( x − 5 ) 2 − 9 is in this form
with ( h , k ) = ( 5 , − 9 )
⇒ vertex = ( 5 , − 9 )
the axis of symmetry passes through the vertex is vertical with equation
x = 5 ← axis of symmetry graph{(y-x^2+10x-16)(y-1000x+5000)=0 [-20, 20, -10, 10]}