The slope is two.
Explanation: To find the slope, do rise over run. An easy way to do this is to select two points on the graph. I selected (-1,2) and (-3,6)
The “rise” is the y value, the “run” is the X value. So if you subtract the x values (-1 and -3), you get two. If you subtract the Y values (6 and 2) you get 4. Since the Y value is the rise, you would put 4 over 2, which equals two.