Hi there! I can help you. First, let's try out some values of the x-axis and try them out to get the values. You do this from multiplying by -3/2, and then subtracting that value from 3. When you solve it, here is the table:
x | y
---------
-2 | 0
-1 | -1.5
0 | -3
1 | -4.5
2 | -6
In other words, the points are (-2, 0), (-1, -1.5), (0, -3), (1, -4.5), (2, -6). Graphing these points should give you the line for the equation.