Question

Find the vertex of the parabola by completing the square.

Answer 1

x^2-6x+8=y

Answer 2

A. (–3,– 6)
B. (3,–1)
C. (–3,1)
D. (–1, 3)

Answer 3

@lgbasallote

Answer 4

(D)????

Answer 5

complete the square
\[ \large x^2-6x+8=y \]
\[ \large y-8=x^2-6x \]
\[ \large y-8+\left(\frac{6}{2}\right)^2=x^2-6x+\left(\frac{6}{2}\right)^2 \]
\[ \large y-8+9=x^2-6x+9=(x-3)^2 \]
\[ \large y+1=(x-3)^2 \]

Answer 6

but it is (D)

Answer 7

the vertex is (h,k) when
\[ \large y-k=4a(x-h)^2 \]
so the vertex of the parabola is (3,-1)

Answer 8

so (B)

Answer 9

yes