Question

please help

Answer 1

A

Answer 2

something not right here

Answer 3

if x = 3 how can you get y=-2 using the above function?

Answer 4

@trollface you were right, sorry for confusing you, I didn't see the -11 on the second line, so sorry, it is A

Answer 5

to find the vertex I did this
took the derivative of the function
y' = -2x + 6 and set it to Zero and found x then substituted it the above function to get y