Question x-y-6-
The table shows three values of and their corresponding values of , where is a constant, for the linear relationship between and . What is the slope of the line that represents this relationship in the xy-plane?
x y - 6 n + 184 - 3 n + 92 0 n The table
Hard-difficulty · SAT Math · Linear Functions — Slope calculation and interpretation. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice A is correct. The slope, , of a line in the xy-plane can be found using two points on the line, and , and the slope formula . Based on the given table, the line representing the relationship between and in the xy-plane passes through the points , , and , where is a constant. Substituting two of these points, and , for and , respectively, in the slope formula yields , which is equivalent to , or . Therefore, the slope of the line that represents this relationship in the xy-plane is .
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect and may result from conceptual or calculation errors.
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