Plug them into the given equation and solve
y = 5x
(0, 1)
1 = 5(0)
1 ≠ 0
y = 5x
(1, 5)
5 = 5(1)
5 = 5
y = 5x
(2, 10)
10 = 5(2)
10 = 10
y = 5x
(3, 125)
125 = 5(3)
125 ≠ 15
The points that do not lie on the graph are the ones that don't equal.
That is point (0, 1) and point (3, 125).
Hope this helps!