What is the rate of change and initial value for the linear relation that includes the points shown in the table?
 x y
 1 10
 2 8
 3 6
 4 4
 Initial value: 12, rate of change: −2
 Initial value: 8, rate of change: 2
 Initial value: 12, rate of change: 2
 Initial value 8, rate of change: −2