Answer:
4
Explanation:
The constant rate of change of the ordered pairs can be termed as the slope.
Slope is expressed as m = Δy/Δx
m =

Using the coordinates when x₁ =1, y₁ = 2 and when x₂ = 3, y₂ = 10 according to the table.
Substituting this coordinates into the slope equation.

Hence the constant rate of change of the ordered pairs is 4
Note that no matter the value of the coordinates used, you will still get the same constant since they are directly proportional.