Answer:
A translation of 3 units up (see the explanation)
Step-by-step explanation:
we have
[tex]y=x^{2}+c[/tex]
This is a vertical parabola open upward (the leading coefficient is positive)
The vertex is the point (0,c)
If increasing the constant c by 3 units
then
The new equation will be
[tex]y=x^{2}+(c+3)[/tex]
The new vertex is the point (0,c+3)
That means
The new parabola is a translation of the original parabola
The rule of the translation is
(x,y) ----> (x,y+3)
The translation is 3 units up