Rewrite the equation in vertex form. y = x2 - 6x + 18 A) y = (x + 3)2 + 9 B) y = (x - 3)2 + 9 C) y = (x - 3)2 + 27 D) y = (x - 6

Question

hram777 [196]

3 years ago

14

Rewrite the equation in vertex form. y = x2 - 6x + 18 A) y = (x + 3)2 + 9 B) y = (x - 3)2 + 9 C) y = (x - 3)2 + 27 D) y = (x - 6

)2 + 18

Mathematics

2 answers:

Mazyrski [523] · Answer 1 · 2022-06-05T16:37:46+03:00

Mazyrski [523]3 years ago

8 0

Answer:

$\large\boxed{B)\ y=(x-3)^2+9}$

Step-by-step explanation:

$\text{The vertex form of equation}\ y=ax^2+bx+c:\\\\y=a(x-h)^2+k\\\\h=\dfrac{-b}{2a},\ k=f(h)\\\\\text{We have the equation:}\ y=x^2-6x+18\\\\a=1,\ b=-6,\ c=18\\\\\text{Substitute:}\\\\h=\dfrac{-(-6)}{2(1)}=\dfrac{6}{2}=3\\\\k=f(3)=3^2-6(3)+18=9-18+18=9$

natka813 [3] · Answer 2 · 2022-06-05T18:48:26+03:00

natka813 [3]3 years ago

6 0

Answer:

the answer is B

Step-by-step explanation:

i just did it on usa testprep trust me