Question

HELPPPPPPPPPPPP
Identify the vertex for the graph of y = 2x2 + 8x - 3. (4 points)

(2, 21)

(2, 17)

(-2, -11)

(-2, -27)

Answer 1

do you recognise the equation in standard quadratric form
ax^2 + bx + c ?

in your equation can you Identify the equivalent values of a,b & c?

Answer 2

y = 2x^2 + 8x - 3

2(x^2 + 4x - 3/2)
2((x + 2)^2 - 4 - 3/2)
2((x + 2)^2 - 11/2)
2(x + 2)^2 - 11
= (-2, -11)

Answer 3

thanks!