Kui fookus on punktis F(p; q) ja juhtsirgeks on sirge võrrandiga y=r,
kus r≠q, s.t fookus ei asu juhtsirgel, siis saab parabooli võrrand kuju

y=\frac{1}{2(q-r)}x^2-\frac{p}{q-r}x+\frac{p^2+q^2-r^2}{2(q-r)}.

F = (2, 2)
p: x(F)
q: y(F)
A = Point(j)
r: y(A)
g(x) = (1 / ((2 * (q - r))) * x^(2)) - (p / (q - r) * x) + (p^(2) + q^(2) - r^(2)) / ((2 * (q - r)))
f = Parabola(F, j)
tekst4: "Võrrand  \; valemiga: \; y=" + (LaTeX[g]) + " 
=" + (LaTeX[1 / ((2 * (q - r)))]) + "x^2-" + (LaTeX[p / (q - r)]) + "x
+" + (LaTeX[(p^(2) + q^(2) - r^(2)) / ((2 * (q - r)))]) + ""
tekst3: "Parabool\;GeoGebra\;abil:\; " + (LaTeX[f]) + " "