Question

y∝1/√x if y=5 when x=49 find, y when x=25.

Answer 1

Answer:

given,

y is directly proportional to (1/√x),

that means,

y1/y2 = √(x2/x1),

=> 5/y2 = √(25/49),

=> 5/y2 = 5/7,

=> y2 =7.