What is the vertex of the graph of y = x2 + 4X? O (-2, -12)
O (-2,-8)
O(-2,-6)
O (-2,-4)

vertex = (- 2, - 4 )

Step-by-step explanation:

Given a parabola in standard form

y = ax² + bx + c ( a ≠ 0 )

Then the x- coordinate of the vertex is

x = -

y = x² + 4x ← is in standard form

with a = 1, b = 4, c = 0 , then

x = - = - 2

Substitute x = - 2 into the equation for corresponding value of y

y = (- 2)² + 4(- 2) = 4 - 8 = - 4

vertex = (- 2, - 4 )

is this a multiple choice question?

if so it's a and c

2 x^2 -3x+p

sum of roots = 3/2

let other root be x

3+ x = 3/2

x= 3/2 - 3 = -3/2

product of roots = p/2

3× -3/2 = p/2

-9 = p

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