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The equation y = 3x represents a proportional relationship. The value of y when x= 7 is ________
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The equation y = 3x represents a proportional relationship. The value of y when x= 7 is ________

User Barunsthakur
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21

If you replace the c with 7, you get y=3•7. Which simplifies to y=21.
User Walker Hale IV
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