Final answer:
The slope calculated for the points (-1, 5) and (2, -7) using the formula m = (Y2 - Y1) / (X2 - X1) is -4. Hence, the correct code for the puzzle is LF.
Step-by-step explanation:
To determine the slope, or m, between two points on a graph, we use the formula m = (Y2 - Y1) / (X2 - X1). In the provided puzzle, you have supplied sets of points for which we need to calculate the slope. Let's calculate the slope for the pair (-1, 5) and (2, -7).
Using the slope formula, we get:
m = (-7 - 5) / (2 - (-1))
m = (-12) / (3)
m = -4
The correct code for the given points, according to the answer choices, would be LF, because 'L' represents the slope being undefined, which is not our case, and 'F' corresponds to m = -4, our calculated slope.