Question

a parabola has a vertex at (0,0). the focus of the parabola is located on the positive y - axis. in which direction must the parabola open?
up
down
left
right

Explanation:

For a parabola with vertex at \((0,0)\), the direction it opens is determined by the position of the focus. If the focus is on the positive \(y\)-axis (above the vertex), the parabola opens towards the focus, which is upward.

Answer:

A. up