f(x) = 1/4·(x^2 - 2·x - 8) = 0.25·x^2 - 0.5·x - 2
g: x - 2·y + 2 = 0 → g(x) = 0.5·x + 1
Differernzfunktion
d(x) = g(x) - f(x) = - 0.25·x^2 + x + 3
Nullstellen
d(x) = 0 --> x = -2 ∨ x = 6
Fläche
A = ∫ (-2 bis 6) (- 0.25·x^2 + x + 3) dx = 64/3 = 21.33
Skizze
~plot~ 0.5·x+1;0.25·x^2-0.5·x-2;[[-3|7|-3|5]] ~plot~