Question

If y varies directly as x, find the constant of variation if y = 10 when x = 5

Answer 1

-2

2

3

-1

Answer 2

as y directly varies with x, u can write y=kx
put x= 5, y= 10
so
10 = 5k
can u find k now ?

Answer 3

In direct proportion,\[k = {y \over x}\]

Answer 4

Here,\[k = {y\over x}={10 \over 2}\]

Answer 5

2