Q1. Observe the below table and find if x and y are directly proportional.
x | 5 | 8 | 12 | 15 | 18 | 20 |
y | 15 | 24 | 36 | 60 | 72 | 100 |
Calculating we get:
So, clearly equals to
hence it is not equal to some constant value 'k'.
We can say that x and y are not directly proportional.