Answer:
c. (3, -5)
Step-by-step explanation:
{x + 3y = -12
{y = ⅓x - 6
x + 3[⅓x - 6] = -12
x + x - 18 = -12
2x - 18 = -12
+ 18 + 18
____________
2x = 6
__ _
2 2
x = 3 [Plug this back into both equations to get the y-coordinate of -5]; -5 = y
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