f(x)=\frac{k}{x}

k = 4 (slider from -20 to 20, step 1)
f(x) = k / x
texte1 = LaTeX(f, true, true)
A: (1, f(1))
B: (2, f(2))
C: (4, f(4))
D: (1 / 2, f(1 / 2))
E: (-1 / 2, f(-1 / 2))
F: (-1, f(-1))
G: (-2, f(-2))
H: (-4, f(-4))
I: (8, f(8))
J: (-8, f(-8))