f(x) = ax+b

Faire varier a et b à l'aide des curseurs.

a = 0.7 (slider from -10 to 10, step 0.1)
b = 3.6 (slider from -10 to 10, step 0.1)
f(x) = a * x + b
B = Intersect(f, yAxis, 1.0)