Which function works with the origin as a solution? y=4n , y=2n+2 , y=n+2 , y=3n+1

Question

How do we find the answer to this problem? 

 

Which function works with the origin as a solution?  y=4n , y=2n+2 , y=n+2 , y=3n+1

Answer 1

If you want an equation to have the origin (0, 0) as a solution, then when you plug 0 into both variables, it must make a true statement.

 

Check:

y = 3n + 1

0 = 3(0) + 1

0 = 1. False!

This is not the answer.

 

Try some of the other equations to find which one is correct!