What is ordered pairs and Equality of ordered pairs

y le 3x+1 x-ygt1 ,brgt Which ordered pair is in the set of all ordered pairs that satisfy the above system of inequalities?

Define a function as a set of ordered pairs.

A man ordered 4 pairs of black socks and some pairs of brown socks. The price of a black pair is double that of a brown pair. While preparing the bill, the clerk did a mistake and interchanged the number of black and brown pairs. This increased the bill by 50%. The ratio of the number of black and brown pairs of socks in the original order was

Plot the points corresponding to ordered pairs of (x, y) given in the following table :

If 2^(a)=7^(b) then number of ordered pairs (a,b) of real numbers is

If (a+ib)^(2018)=a- ib then number of real ordered pairs (a,b) that are solution of the given equation is N , then [(N)/(100)] equals