Given that y is directly proportional to x and that y = 40 when x = 20

1.	Given that y is directly proportional to x and that y = 40 when x = 200,the value of y when x = 15 is
Answer» Answer: By definition of proportionality, If y is directly proportional to x, y α x ∴y=Kx .......EQUATION 1 where K is CONSTANT of proprtionality Now, GIVEN that x=2,y=4 putting the above values in Equation 1 we GET, 4=K×2 ∴K=2

Given that y is directly proportional to x and that y = 40 when x = 200,the value of y when x = 15 is

Answer»

Answer:

By definition of proportionality,

If y is directly proportional to x,

y α x

∴y=Kx .......EQUATION 1

where K is CONSTANT of proprtionality

Now,

GIVEN that x=2,y=4

putting the above values in Equation 1 we GET,

4=K×2

∴K=2