A variable #y# varies directly with the square of #x#. If #x=3# when #y=6#, what is the constant of proportionality, #k#?
1 Answer
Apr 30, 2018
The constant proportionality
Explanation:
Given -
#x=3#
#y=6#
y varies directly with x, then
#y=k.x#
Substituting the values, we get -
#6=k.3#
By transpose we get -
#k.3=6#
#k=6/3=2#
The constant proportionality