Observe the figure:
\The vertex of the parabola is and the point on the parabola is
.
The parabola opens up which means that the parabola equation is of tge form .
Substitute the values of in
.
To determine the remaining parameter , substiute the values
in
.
Substiute the values in the equation .
The parabola equation is .
The parabola equation is .