How to draw the image of quadratic function? I see y = 3x ^ 2 confused How to establish? Told me. I will benefit a lot

How to draw the image of quadratic function? I see y = 3x ^ 2 confused How to establish? Told me. I will benefit a lot

Find the axis of symmetry first
I'm looking for the intersection of X and Y axis
The three points are connected by a smooth curve