x1 = Point(xAxis)
x2 = Point(xAxis)
x3 = Intersect(xAxis, yAxis)
x4 = Point(xAxis)
x5 = Point(xAxis)
x6 = (6, 0)
a = -200 (slider from -200 to 200, step 1)
f(x) = ((((((1 / a * x) * (x + 3)) * (x + 2)) * (x - 1)) * (x - 4)) * (x - 6))