a = -0.1999999999999993 (slider from -5 to 5, step 0.1)
b = 1.4000000000000004 (slider from -5 to 5, step 0.1)
c = 0 (slider from -5 to 5, step 0.1)
d: y = (a * x^(2)) + (b * x) + c