Please help me with this

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Which graph represents the linear function below? y-3=1/2(x+2)