Determine the vertex and the axis of symmetry for the function below: y=x^2+4x+1

Arational number that is equivalent to -20/4?

Pls what is the relative minimum of the function? enter your answer in the box

Indicate the equation of the given line in standard form. the line containing the longer diagonal of a quadrilateral whose vertices are a (2, 2), b(-2, -2), c(1, -1), and d(6, 4).