Answer:
1. y = 2x
2. y = 1/5(x)
3. y = -3x
4. y = 4x
Explanation:
All of these lines are proportional, so they're in the form of y = kx where k = constant of proportionality.
Slope Formula:

1.
2.
- y = 1/5(x)
3.
4.
Have a lovely rest of your day/night, and good luck with your assignments! ♡