If x = 20 and y = 40, then x and y are: - Vidyadip

MCQ

If $x = 20$ and $y = 40,$ then $x$ and $y$ are:

A
Inversely proportional.
✓
Directly proportional.
C
Neither directly nor inversely proportional.
D
Cannot be determined.

✓

Answer

Correct option: B.

Directly proportional.

$x = 20$ and $y = 40$
Clearly, $40 = 2 \times 20$
$y = 2x$
$\text{y}\propto\text{x},$ where $2$ is the proportionality constant.

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