evelyn51 evelyn51

07-11-2017
Mathematics

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Does the equation y = 3x - 12 show a proportional relationship between x and y? Explain

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altavistard altavistard

07-11-2017

y = 3x represents a proportional relationship, whereas

y = 3x - 12 does not. What's the difference? No constant term, such as -12. Recognize direct proportion as being expressed as y = kx (no constant term).

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