a = -4.5 (slider from -5 to 5, step 0.1)
b = 0.2 (slider from -5 to 5, step 0.1)
c = -2.5 (slider from -5 to 5, step 0.1)
deg_1: (a * x) + (b * y) = c
d = -0.6 (slider from -5 to 5, step 0.1)
g: (a * x) + (b * y) + (c * (y * x)) = d
e = 3.7 (slider from -5 to 5, step 0.1)
f = -2.3 (slider from -5 to 5, step 0.1)
h: ((a * x))^(2) + ((b * y))^(2) + (c * (y * x)) + (d * x) + (e * y) = f