Whats the solution of y=2x-31

When there are two variables ('x' and 'y'), then you need two equations

in order to find a solution.

If you only have one equation with 2 variables, then there are an infinite

number of solutions.

Here are a few solutions to this particular equation:

x = 0, y = - 31

x = 1, y = - 29

x = 2, y = - 27

x = 3, y = - 25

x = 15, y = - 1

x = 20, y = 9

x = 30, y = 29

x = 40, y = 49

x = 50, y = 69

x = 100, y = 169

Now that you have these 10 solutions,

there are only an infinite number of others.