Change y = 3x (proportional) to non proportional:
To change the equation y = 3x from proportional to non-proportional, we need to introduce a constant term. One way to do this is by adding a constant value to the equation.
For example, we can modify the equation by adding a constant term of 4:
y = 3x + 4
Now, the equation is non-proportional because the y-intercept is no longer at the origin (0, 0). The constant term of 4 shifts the relationship between y and x, making it non-proportional.