Answer:
The correct option is 4.
Step-by-step explanation:
If a linear function passes through two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex], then the slope of linear function is
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
From the given table consider any two points from the table.
Let as consider two point (1,3.5) and (2,7). Slope of the function is
[tex]m=\frac{7-3.5}{2-1}[/tex]
[tex]m=\frac{3.5}{1}[/tex]
[tex]m=3.5[/tex]
Rate of change is 3.5. Therefore the correct option is 4.
