Odpowiedź:
3x + 2y = -8
-6x - 5y = 11
a) x = -2 y -1
Spr.: L = 3x + 2y = 3 • (-2) + 2 • (-1) = -6 + (-1) = -7
P = -8
L =/= P
Spr.: L = -6x - 5y = -6 • (-2) - 5 • (-1) = 12 - (-5) = 17
P = 11
L =/= P
b) x = -4 y = 2
Spr.: L = 3x + 2y = 3 • (-4) + 2 • 2 = = -12 + 4 = -8
P = -8
L = P
Spr.: L = -6x - 5y = -6 • -4 - 5 • 2 = 24 - 10 = 14
P = 11
L =/= P
c) x = -6 y = 5
Spr.: L = 3x + 2y = 3 • (-6) + 2 • 5 = -18 + 10 = -8
P = -8
L = P
Spr.: L = -6x - 5y = -6 • (-6) - 5 • 5 = 36 - 25 = 11
P = 11
L = P
d) x = -8 y = 8
Spr.: L = 3x + 2y = 3 • (-8) + 2 • 8 = -24 + 16 = -8
P = -8
L = P
Spr.: L = -6x - 5y = -6 • (-8) - 5 • 8 = 48 - 40 = 8
P = 11
L =/=P
Odp.: Więc C spełnia równania.
Szczegółowe wyjaśnienie:
Pozdrawiam.