If x is directly proportional to y then which of the following is correct ?
If x is directly proportional to y then which of the following is correct ?
A) x ∝ 1/y
B) xy = 1/k
C) x/y = k
D) x = y
5 views
2 Answers
Correct option is (C) x/y = k
\(x\propto y\)
\(\Rightarrow\) x = ky
\(\Rightarrow\) \(\frac{x}{y}=k\)
Alternate :- If x is directly proportional to y then the ratio of x and y must be constant.
i.e., \(\frac{x}{y}=k\)
5 views
Answered