Step-by-step explanation:
8x + y = -16
y = -8x - 16 --(1)
-3x + y = -5 --(2)
sub (1) into (2):
-3x - 8x - 16 = -5
-11x = 11
x = -1
sub x = -1 into (1):
y = -8(-1) - 16
y = -8
therefore, the solution is (-1, -8).
Topic: coordinate geometry
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