Answer
Both are solutions
Work Step by Step
We are given that $y=2x^{2}$.
In order to see whether each ordered pair is a solution of the given equation, we can plug in the ordered pair to the equation.
For (1,2): $2\times1^{2}=2\times1=2$
So, (1,2) is a solution.
For (3,18): $2\times3^{2}=2\times9=18$
So, (3,18) is a solution.