Which of the points A (6; 1), B (-6; -5), C (0; -2), D (-1; 3) belong to the graph of the equation x-2y = 4

To determine this, it is necessary to substitute the corresponding x and y coordinates of each point into the equation given to us in this way:
we have x-2y = 4
1) For point A: 6-2 = 4 (4 = 4)
2) For point B: -6-2 * (- 5) = – 6 + 10 = 4 (4 = 4)
3) For point C: 0-2 * (- 2) = 4 (4 = 4)
4) For point D: -1-2 * 3 = -7 (-7 is not equal to 4)
I didn’t mark right away, sorry, we look only at those points that, when substituting the coordinates of which, we get the correct equality, that is, when substituting which we get in this example, 4 = 4
it turns out that 3 such points are points A, B and C
Answer: points A, B and C belong to the graph x-2y = 4