Question

'X' and 'y' are directly proportional to each other , x = 15 when y = 25? (gud mrng)​

Answer 1

Answer:

y = 3

Explanation:

the initial statement is  

y ∝ 1 x

to convert to an equation multiply by k the constant  of variation

⇒ y

= k × 1 x = k x

to find k use the given condition

y = 15

x=5

y = k x

⇒ k = y x

=>15 × 5 =75

equation is  

2 2 y = 75 x 2 2

 when  

x =25

then

y = 75

25 = 3

Answer 2

Answer:

Explanation:

the initial statement is

y

∝

1

x

to convert to an equation multiply by k the constant

of variation

⇒

y

=

k

×

1

x

=

k

x

to find k use the given condition

y

=

15

when

x

=

5

y

=

k

x

⇒

k

=

y

x

=

15

×

5

=

75

equation is

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

∣

∣

∣

2

2

y

=

75

x

2

2

∣

∣

∣

−−−−−−−−−−−−

when

x

=

25

then

y

=

75

25

=

3