Question 2 The vertex form of the equation of a horizontal parabola is given by =(y-k)+h, where (h, k) is the vertex of the parabola and the absolute value of p is the distance from the vertex to the focus, which is also the distance from the vertex to the directrix. You will use GeoGeb to create a horizontal parabola and write the vertex form of its equation. Open GeoGebra e, and complete each step below. Part A Mark the cus of the parabola you are going to create at R-5, 2). Draw a vertical line that is 8 units to the right of the focus. This line will be the directrix of your parabola. What is the equation of the line?