Write the following into the form of

and find the vertex, the symmetric axis and y-intercept

a)

Vertex = (-1,-2), Symmetric, x=-1, y-intercept, when x=0, y=-1

Am i doing the correct method to calculate ??

b)

Vertex = (2,3), symmetric x=2, y-intercept=-1

c)

Vertex (-1,-6), symmetrix =-1, y-intercept=-6

am i correct ?