Answer:
The axis of symmetry is [tex]x=1[/tex]
Step-by-step explanation:
we know that
In a vertical parabola, the axis of symmetry is equal to the x-coordinate of the vertex
In this problem we have a vertical parabola open upward
The x-coordinate of the vertex is equal to the midpoint between the zeros of the parabola
so
[tex]x=\frac{5-3}{2}=1[/tex]
therefore
The axis of symmetry is [tex]x=1[/tex]