Answer:
0.4 I'm sorry if it wrong 
 
        
             
        
        
        
Answer:
sub to my you tube channel:
Josiah Rowell
Step-by-step explanation:
 
        
             
        
        
        
Answer:
use Socratic
Step-by-step explanation:
it's a app 
 
        
             
        
        
        
Answer:
Up
Step-by-step explanation:
Y= 1x^2 + 3x + 9
Y= Ax^2 + Bx + C 
To determine which way a parabola opens just look at the coefficient (the number) of the x^2 - Always use the coefficient that is beside the x^2
So,  if the coefficient A is positive the parabola is opening upward
       if the coefficient A is negative the parabola is opening downward