Final answer:
The x-intercepts for functions A (2x - 3y = 6) and B (-x + 4y = -12) are (3,0) and (12,0), respectively. The positive difference between these x-intercepts is 9, an option not listed in the question, suggesting an error in the options.
Step-by-step explanation:
To find the positive difference between the two x-intercepts of the given functions A and B, we first need to solve for the x-intercepts. An x-intercept occurs where y is equal to 0.
For function A (2x - 3y = 6), setting y to 0 gives us:
2x - 3(0) = 6
2x = 6
x = 3
So the x-intercept for function A is at (3,0).
For function B (-x + 4y = -12), setting y to 0 gives us:
-x + 4(0) = -12
-x = -12
x = 12
The x-intercept for function B is at (12,0).
To find the positive difference between the x-intercepts of functions A and B, we subtract the x-value of function A's intercept from the x-value of function B's intercept:
12 - 3 = 9
The positive difference between the two x-intercepts is 9, which is not one of the options provided in the question. Therefore, there may be an error in the provided options.