Question

Which function's graph has axis of symmetry x = 2?

Answer 1

Answer:

y=-3x2 - 12x+6 ,     x = -(-12)/2*3 = 2  this one has axis of symmetry  x = 2

Step-by-step explanation:

y = 3x² + 12x+6  :    x = -12/6 = -2

y = 3x2 - 6x+12 ,    x = -(-6)/2*3 = -1

y=-3x2 - 12x+6 ,     x = -(-12)/2*3 = 2  this one

y=-3x2 + 12x+6 ,   x = -12/2*3 = -2