F= 3.5 x is a linear relationship. what data would you plot along the y-axis, the x-axis?

The data that you would place along the x-axis would be the independent variable. The data along the y-axis is the dependent variable. From the given variable, the x values are along the x-axis and the F values are along the y-axis. Just substitute random values of x, then you get corresponding values of F. As you plot the points in the graph, it would form a linear function as shown in the picture.