Question

What is the rate of change and the initial value for the linear relation that includes the points shown in the table?

x y
1 20
3 10
5 0
7 -10

Initial value: 20, rate of change: 10
Initial value: 30, rate of change: 10
Initial value: 25, rate of change: −5
Initial value: 20, rate of change: −10

Answer 1

I think the answer might be the last one but im not 100% sure 

Answer 2

Initial value: 25, rate of change: -5