What are the vertex and x-intercepts of the graph of the function below?

y =(x + 4)(x + 2)

A. Vertex: (1, -5); Intercepts: x = -4, 2
B. Vertex: (1, -9); Intercepts: x = 4, -2
C. Vertex: (-4, 2); Intercepts: x = 3, -3
D. Vertex: (-3, -1); Intercepts: x = -4, -2

Question

What are the vertex and x-intercepts of the graph of the function below?

y =(x + 4)(x + 2)

A. 	Vertex: (1, -5); Intercepts: x = -4, 2
  		B. 	Vertex: (1, -9); Intercepts: x = 4, -2
  		C. 	Vertex: (-4, 2); Intercepts: x = 3, -3
  		D. 	Vertex: (-3, -1); Intercepts: x = -4, -2

triciaal · Answer

x-intercept means when y = 0 
when y = 0   (x +4) = 0 or (x +2) = 0 
find your x values

anonymous · Answer

Ah, I'm sorry for such a late reply. I really don't know these at all. :L

triciaal · Answer

option 1 
x^2 + 6x + 8 = 0 
a=1, b = 6, c = 8
x-value of vertex = -b/2a
y-value = f(-b/2a)

anonymous · Answer

Is the x-intercept by chance -3?

triciaal · Answer

option 2 
how would you complete the square?

triciaal · Answer

no  
the vertex at x = -3

triciaal · Answer

the x-intercept when y = 0

triciaal · Answer

read the very first response

anonymous · Answer

My apologies, I'm very bad at this. 
Would it be option D?

triciaal · Answer

yes

anonymous · Answer

Thank you :3

triciaal · Answer

please review the process
welcome

anonymous · Answer

I'll definitely be sure to keep this in mind, thank you! ❤

triciaal · Answer

no problem