Write the slope-intercept form of the equation of each line.
![Write the slopeintercept form of the equation of each line class=](https://us-static.z-dn.net/files/d1a/0a81048d96f8aaf0b8c9d4ce3c4af691.png)
Answer:
1. is undefined
2. is negative
3. is zero
4. is positive
Step-by-step explanation: