Question

what is the axis of symmetry of the parabola given by the equation y= 3(x+9)^2 - 12?

Answer 1

look inside that parenthesis (x+9)

the axis of symmetry is on the x postion where (x+9) = 0

so the axis of symmetry x=-9 because (-9+9) = 0

Answer 2

haha yes

Answer 3

thank you! so thats all you do for the axis of symmetry.. in the prntesis?

Answer 4

for quadratic functions, find what value for x makes the parenthesis 0