Answer:
Below
Explanation:
here is the factored form of a quadratic equation : 
 f(x) = a ( x +/- n ) ( x +/- n )
We can just plug in what we know into this form : 
 f(x) = 2 ( x + 4 )( x + 1 ) 
If you were to plug this into desmos it will show you the graph! 
Hope this helps!