So for the first question, the rate of change for the graph is -2 because in the equation, it says -2x. Here are the y values for the table:
f(-2) = 2 f(-1)= 0 f(0)= -2 f(1)= -4 f(2)= -6
For the second equation the rate of change is 2/3 because in the equation it says 2/3x. Here are the y values for the table:
f(-6) = -3 f(-3) = -1 f(0) = 1 f(3) = 3 f(6) = 5
Hope this helps!