Question

-3x +6y=-9
4x-6y =10

Answer 1

Simplificando as funções obteremos:

-3x + 6y+9=0

a = -3 b = 6  c = 9

Δ = b² - 4.a.c

Δ = 6² - 4.(-3).9

Δ = 36 - 108

Δ = -72

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4x - 6y-10=0

a = 4 b = -6  c = -10

Δ = b² - 4.a.c

Δ = (-6)² - 4.4.(-10)

Δ = 36 - 160

Δ = -124