Q1. Observe the following tables and find if x and y are directly proportional.

Answers (1)

If we want to know that they are directly proportional, then we calculate   \small \frac{x}{y}  :

 \small \frac{x}{y}=\frac{20}{40} = \frac{17}{34}=\frac{14}{28}=\frac{11}{22}=\frac{8}{16}=\frac{5}{10}=\frac{2}{4}=\frac{1}{2} .

Hence we can say that x and y are directly proportional as \small \frac{x}{y} cames out to be a constant equals \small \frac{1}{2}.

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