A quadratic function represents a parabola in the graph.

The quadratic function $\"\"$ .

Compare with standard form of quadratic function $\"\"$ .

$\"\"$ .

Since $\"\"$ , the parabola opens upward and it has minimum value.

Minimum value of quadratic function is vertex $\"\"$ .

$\"\"$

Minimum point is $\"\"$ .

Minimum value of the function is $\"\"$ .