Question

the wave length of sound (L) in a car and distance yravell by that car (d) are in direct variation​

Answer 1

ur answer is given in the pic..

Answer 2

Answer:

Circumference (c) of a circle is directly proportional to its radius (r). This statement is written as 

c∝rc∝r

(2) 

Consumption of petrol (l) in a car and distance travelled by that car (d) are in direct variation. This statement is written as

l∝d