If the relationship is proportional, what is the missing value from the table?xy–3–1–12?–30–10

The known pairs are (x, y) = (−3, −1) and (−30, −10). In both, y is one-third of x, so the proportional relationship is y = x/3. When x = −12, y = −12/3 = −4, so the missing value is −4.

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