5) slope = 5/3
6) slope = -3
Step-by-step explanation:
we pick any two points to find the slope
slope formula:

On the graphs, the indicated points are the points in black dot.
And the unit of the graph is asummed to be 1 unit per square.
5) In number 5, we have point (2, 0) and (5, 5)

slope = (5 - 0)/(5 -2)
slope = 5/3
6) The indicated points: (-2, 3) and (-1, 0)

slope = (0 - 3)/(-1 -(-2))
Slope = -3/(-1+2)
Slope = -3/1
slope = -3