A parabola has a vertex at (0,0). The equation for the directrix of the parabola is x = -4. In which direction does the parabola open?

A parabola has a vertex at (0,0). The equation for the directrix of th

1.	A parabola has a vertex at (0,0). The equation for the directrix of the parabola is x = -4. In which direction does the parabola open?
Answer» A parabola has a vertex at (0,0). The equation for the directrix of the parabola is x = -4. In which direction does the parabola open? Solution: