1. Initial value: 10
   Rate of change: 3
   Equation: y + 3
2. Initial value: 3
    Rate of change: 3
    Equation: y + 3
3. Initial value: 8
    Rate of change: -2
    Equation: y - 2
The initial value is the y-coordinate when x is equal to 0.
The rate of change is the difference between one point to the next immediate point.
The equation shows the rate of change.