In this scenario, the independent variable is Will's grandmother's age (y). The number of boxes of candles Will will purchase (b) depends on her age, meaning that the age determines the amount of boxes he will buy. Therefore, the age is the independent variable as it is the one that influences the other variable.
Will is buying birthday candles for his grandmother's birthday cake. Her age, in years, will determine how many boxes of candles Will will purchase.
y = Will's grandmother's age, in years
b = how many boxes of candles Will will purchase
Which variable is the independent variable?
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