Answer:
D. Up
Step-by-step explanation:
When a parabola has the form
, It is vertical (opens up or down).
Because the variable "x" is squared.
If "a" is positive, then the parabola opens up, but if it is negative, then the parabola opens down.
In this case you have the quadratic function:

Which can be rewritten as:
Therefore, it is vertical, because it has the form: 
You can observe that the value of "a" is:

Then, since "a" is positive, the parabola opens up.
Answer:
✓32
or
4✓2
or
5.66
Step-by-step explanation:
That's the answer. Hope it helps
Answer:
See attached graph
Step-by-step explanation:
No, because using the vertical line test, two points touch on the same line
[3, 3]
[3,4]