$a=%v$

$x_S=%v$

$y_S=%v$

$f$

a = -0.5 (slider from -5 to 5)
x_S = 3 (slider from -5 to 5)
y_S = 2 (slider from -5 to 5)
f(x) = (a * (x - x_S)^(2)) + y_S
sy = If(y_S ≥ 0, "+", "")
sx = If(x_S ≤ 0, "+", "")
Text1: "f(x)=" + (LaTeX[a]) + "\cdot(x" + (LaTeX[sx]) + "" + (LaTeX[(-x_S)]) + ")^2 " + (LaTeX[sy]) + "" + (LaTeX[y_S]) + ""
s: 0