Answer:
4. 0
5. -2
6. 3/2
Explanation:
when you already have the line rise/run method is the easiest! start at one point and then move either up/down (up is positive down is negative) and record the spaces you move, and then move to the right, record in the spaces you moved. put it as a fraction, the amt you moved up/down as the numerator and the amt u moved right as the denominator. keep in mind the numbers on the axes! remember to simplify!
look up "slope dude" on yt for help with 0 and undefined
hope this helps!