The expression for y in terms of "a" when value of x is doubled is
<em><u>Solution:</u></em>
Given that,
y is directly proportional to
Therefore,
Where "k" is the constant of proportionality
y = a for particular value of x
Therefore,
--------- eqn 1
We have to find when x is doubled
x is doubled means 2x
Let it be
Hence we get,
--------- eqn 2
Substitute value of k from eqn 1, we get
Thus expression for y in terms of "a" when value of x is doubled is