Graph y=3x^2-12x+13. what is the minimum value of the function?

(2,1)

Step-by-step explanation:

You are only asking that the graph be drawn and that the minimum be stated. You are not asking how the minimum was obtained (by completing the square).

The graph (using Desmos) shows that the min is at (2,1)

Graphing is a mighty powerful tool, wouldn't you say? It tells you the answer before you have to do one bit of algebra.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value