Question

dcddccddc

Answer 1

homework

Answer 2

These are all of the form y=ax²+bx+c. The graph is a parabola.
The x-coordinate of the vertex is -b/(2a).
This is also the line of symmetry: x=-b/(2a). Try this with your own parabolas!

Answer 3

idk

Answer 4

Try warming up with the hints I gave you!

Answer 5

Symmetry at x=-2, so -b/(2a)=-2. Look for formulas that give this result.
Also: c is the y-coordinate of the y-intercept. According to the formulas it can be -5 or 5.
Look at the graph to see what it is.