find the slope please

Answer:
7.) 1 (1,1)
8.) not sure
9.) 1 (-2,-2)
Step-by-step explanation:
I used rise over run
Answer:
7) Slope is 1
8) unidentified
9) i can't really see the picture but i suggest you grab two points from the line and plug them into the equation (y2 - y1) / (x2 - x1).
Step-by-step explanation: