x1,y1, x2,y2 are 4 observations then they are in ………………. proportion.
x1, y1,x2 , y2 are any 4 observations then they are in ………………. proportion.
A) Equal
B) Inverse proportion
C) Direct proportion
D) None
4 views
2 Answers
Correct option is (B) Inverse proportion
\(x_1\,y_1=x_2\,y_2\) = k (Let)
\(\Rightarrow\) \(x_1\,y_1=k\) & \(x_2\,y_2=k\)
\(\Rightarrow\) \(x_1=\frac k{y_1}\) & \(x_2=\frac k{y_2}\)
\(\Rightarrow\) \(x_1\propto\frac1{y_1}\) & \(x_2\propto\frac1{y_2}\)
Thus, they are in inverse proportion.
4 views
Answered