Since the equation 'y = 12 - 3x' can be written in the form of 'y = mx + c' as 'y = -3x + 12'
We know that the y-intercept 'c' is at 12
And we also know that the slope, 'm' is -3, which means that for every unit on the x-axis, the point goes down by 3 units on the y-axis.