For each quadratic function, find the axis of symmetry of its graph.

Question

y=3x^2-6x+4

Answer 1

complete the square ....

y = 3(x^2 - 6x ....) + 4
= 3(x^2 - 6x + 9 - 9) + 4
= 3( (x-3)^2 - 9) + 4
= 3(x-3)^2 - 27 + 4
= 3(x-3)^2 - 23

I trust you can take it from here.