I cant see the table.
But basically what you would do, is:
if x = 5:
y = -3*5+4 = -15+4 = -11
if x = 3:
y = -3*3+4
y = -9+4 = -5
if x = -20:
y = -3*-20 +4 = 60+4 = 64
This should give you an idea. Although this might look like one of those: "Do my homework" questions :P
