The independent variable is the study environment. This is because that's what's being changed in the experiment to determine something else. The dependent variable is how we're measuring results. Therefore, in this experiment, it's the result of the comprehension test.
answer for sir is 27 and second is -18
Of the question or answer
So the X coordinate is 4, and the Y is -5. The rule says X + 2, Y - 8 so (4) + 2, (-5) - 8.
It's D (6, -13)