According to service records for Maya’s Volkswagon, the bakes were checked at 42.1 thousand miles and at 88.6 thousand miles. At the first check, there were 4.8 mmm of friction material left on the rear brake pads; at the second check, there were 2.1 mm remaining.

Express the data in the form of two ordered pairs, (x,y), where x stands for the distance driven in thousands of miles and y stands for the thickness of the brake pads in mm.

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