Find the slope of each line.
A) -3/4
B) 3/4
C) 4/3
D) -4/3

-3/4
To calculate slope, use the formula
Slope (m) = y2 - y1/x2 - x1
Then choose two points on the line of the graph (as shown in attached file)
Input the values as read from the graph and solve for slope using the graph
Note that the discrepancy in answer is due to the assumption made, no value was given on the graph.