Answer:
The value of y is 125 when x=25.
Explanation:
It is given that y varies directly as x. It means y is proportional to x.
Where k is constant of proportionality.
It is given that y=25 when x=5. Put x=5 and y=25 in the above equation to find the value of k.
Divide both sides by 5.
The value of k is 5.
The relation between x and y is defined by the equation
Put x=25 in the above equation.
Therefore the value of y is 125 when x=25.