Question

The variable y is directly proportional to the variable x. If y = 9 when x = 5, what is the value of y when x = 20?

Answer 1

Answer:

y is directly proportional to x

then

y1 /x1=y2/x2

putting values,

9/5=y2/20

y2=180/5

y2=36

Answer 2

Answer:

y is directly proportional to x

then

y1 /x1=y2/x2

putting values,

9/5=y2/20

y2=180/5

y2=36