Question

What are the coordinates of the vertex for f(x) = 2x2 + 4x + 9?

(−2, 4)

(−1, 7)

(1, 15)

(2, 9)

Answer 1

@Abmon98

Answer 2

?

Answer 3

Use the vertex formula for finding the x-value of the vertex. -b/2a Plug the x-value into the original equation to get the y-value.
ax^2+bx+c
2x^2+4x+9
-4/2*2=-1
2(-1)^2+4(-1)+9
2-4+9=7
y=7