The x-intercepts are where the graph crosses the x-axis, and the y-intercepts are where the graph crosses the y-axis
so
x intercept when y = 0 and y intercept when x = 0
first table:
x intercept: (10, 0)
y intercept: (0, 10)
second table:
x intercept: (50, 0)
y intercept: (0, 25)
third table:
x intercept: (300, 0)
y intercept: (0, 1200)