Answer: -3/2
Step-by-step explanation:
The axis of symmetry, and thus the x-coordinate of the vertex, is given by 
So, the answer is 
Answer: 2(x+3)=10 x=2
5(x+4)=25 x=1
Step-by-step explanation:
True!
all parabolas with vertical directrix DO open to the left/right.
Answer: 6
Step-by-step explanation:
1/2 = 3/6
2/3 = 4/6