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20 August, 03:17

The table shows the amount of lemon juice needed to make lemonade. (Unit 9 Lesson 3) Lemon juice (cups) 5 10 20 Servings 35 70 140 Are the two quantities proportional? If so, what is the constant of proportionality?

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  1. 20 August, 03:19
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    Lemon Juice (cups) 5 10 20

    Servings 35 70 140

    The two quantities are proportional. Lemon Juice (cups) is the x-value; while servings is the y-value.

    35 : 5 = 7

    70 : 10 = 7

    140 : 20 = 7

    The constant of proportionality is 7.

    The equation would be: y = 7x
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