Slope, in the form of y = mx + b, is m
[1] 9
() It is the m
[2] -1/2
() It is the m
[3] 2
() add 2x to both sides
[4] 3/4
() add 4y and subtract 12 from both sides (4y = 3x - 12) and then divide by 4
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather