Answer:
y=-2x-3
Explanation:
The set up is always y=mx+b. You have to find m (m is slope) and b (b is y-axis). Since the line goes down, it has a negative slope. From the first point to the second, it goes down 4 and over 2. If you divide 4/2, you get 2 for the slope. The y-axis is just where the point meets the y-axis line and in this example, it meets at -3 so that is your b value.