Algebra 1 essay help?

Create your own quadratic equation whose graph opens down and crosses the x-axis at two points. Use graphing technology to graph the parabola and approximate the coordinates of the vertex and x-intercepts. Provide your quadratic equation, the coordinates of the vertex, and the x-intercepts. Using complete sentences, explain the process of graphing the parabola using graphing technology and why using graphing technology is beneficial.