My students are modeling linear functions from word problems. I have a table for them to enter an x and y value that would be a solution to the linear equation.There are multiple correct solutions. I would like the third column to give them a check mark if the solution they come up with is correct. For example, the equation is 30x+20y=180. x and y can only be positive integers. I need help setting this up.

Here is the link for what I am trying to do:

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Thank you for you help! That works.