Which point is a solution of x + 2y ≤ 4?

Whichever the point is, substitute the x and y values in the inequality and see if the inequality is valid.  If it is, the point is a solution, and vice versa.

For example, the point (0,0) is a solution, because 0+2(0)=0 < 4.  so the inequality is valid, so (0,0) is a solution.

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