Q1. Observe the below table and find if x and y are directly proportional.

Answers (1)

Calculating \frac{x}{y}  we get:

\frac{5}{15}=\frac{1}{3}            \frac{8}{24}=\frac{1}{3}              \frac{12}{36}=\frac{1}{3}   

 \frac{15}{60}=\frac{1}{4}            \frac{18}{72}=\frac{1}{4}                              

\frac{20}{100}=\frac{1}{5}

So, clearly \frac{x}{y} equals to \frac{1}{3},\frac{1}{4},\frac{1}{5}  hence it is not equal to some constant value 'k'.

We can say that x and y are not directly proportional.

 

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