Priya marks four integers on a number line so that consecutive ones are equally spaced (an equal number of steps apart). The first is -9 and the last (fourth) is 6. What is the common step size between consecutive marks?

Question

Accepted Answer

5. From -9 to 6 the total distance is 6 - (-9) = 15, split over 3 equal gaps (4 marks make 3 gaps): 15/3 = 5.

Priya marks four integers on a number line so that consecutive ones are equally spaced (an equal number of steps apart). The first is -9 and the last (fourth) is 6. What is the common step size between consecutive marks?

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