PLS HELP ASAP what is the equation for the line of symmetry for the function below?

y-1=-2(x+3)^2

A. x=3
B. x=-2
C. x=-3
D. y=7

I THINK ITS C BUT IM NOT SURE

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by