Question

The ordered pairs (1,1),(2,4),(3,9),(4.16) and (5,25) represent a function what is a rule that represents this function

Answer 1

For each of the ordered pairs, the x coordinate is squared to find y. 

x = 1
1^2 = 1

x = 2
2^2 = 4

x = 3
3^2 = 9

x = 4
4^2 = 16