Which point belongs to the graph of the function y = -5 / x A (1; 5) B (-2; 10) C (1/5; -25) D (2; 2.5).

Let’s apply the point values to this function. If the conditions of the equation are met, then the point will belong to the graph of the function.
For A (1; 5):
5 = -5/1; 5 = -5 (the equation is not correct);
For B (-2; 10):
10 = -5 / (- 2); 10 = 2.5 (the equation is not correct);
For C (1/5; -25):
-25 = -5 / (1/5); -25 = -25 (the equation is correct);
For D (2; 2.5):
2.5 = -5/2; 2.5 = -2.5 (the equation is not correct).
Answer: point C (1/5; -25).