Answer:
Vertex is at
( 2 , − 4 )
Explanation:
x v e r t e x = − b 2 a ; y v e r t e x = f ( − b 2 a ) given the equation in the standard form of
a x 2 + b x + c
Given : y = x 2 − 4 x + 0a = 1 , b = − 4 , c = 0
x v e r t e x = − ( − 4 ) 2 ⋅ 1 =4 2 = 2
y v e r t e x = f ( 2 ) = ( 2 ) 2 − 4 ( 2 ) = 4 − 8 = − 4
Vertex : ( x , y ) = ( 2 , − 4 )
graph{x^2-4x [-6.43, 7.62, -5.635, 1.39]}