Tentukan himpunan penyelesaian sistem persamaan y=3x-8 y=x2-3x

y = 3x-8
y = x2-3x

Maka
x² - 3x = 3x - 8
x² - 6x + 8 = 0
(x - 2)(x - 4)
x₁ = 2 ∨ x₂ = 4

y₁ = 3 x₁ - 8
    = 3(2) - 8
    = 6 - 8
    = -2

y₂ = 3 x₂ - 8
    = 3(4) - 8
    = 12 - 8
    = 4

HP = {2, -2}
      = {4, 4}