To calculate the rate of change between x and y, considering that this is a linear relationship, you have to calculate the slope of the linear relationship.
The slope of the line can be calculated using two values of the function and the following formula:
[tex]m=\frac{Y_1-Y_2}{X_1-X_2}[/tex]
Using the values (-60, 20) and (35,-24), the slope is
[tex]m=\frac{35-20}{-24-(-60)}=\frac{15}{36}=\frac{5}{12}[/tex]
m=5/12 indicates that every time x varies in one unit, y will vary 5/12
The correct option is number 4
