Answer
See the explanation
Work Step by Step
$\bullet$ Vertex is at $(1,4)$
$\bullet$ Axis of symmetry is $x=1$
$\bullet$ Domain is all real numbers
$\bullet$ Range is all real numbers less than or equal to $4$
$\bullet$ When $x<1$, function is increasing
$\bullet$ When $x>1$, function is decreasing
