Answer:
f(x) =
x - 3
Explanation:
The slope is -1/3. Start at the point (0,-3). From that point go up 1 and 3 left and you will be back on the line at point (-3,-2). The slope is negative because if you start on the very left of the graph and follow the line, you are going down hill.
The y-intercept is -3. This is where the line crosses the y axis (0,-3).