Mathematics · Oct / Nov 2024 · Paper 22 · Question 22
0580
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The question as text
0580/22/O/N/24 © UCLES 2024 [Turn over 22 A is the point (17, 9) and à is the point (23, 39). Find the equation of the perpendicular bisector of line Aà. Give your answer in the form y ēx c ê . y [5] Question 23 is printed on the next page.
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[y =] – 1 5 x + 28 final answer [5]
B1 for midpoint (20, 24) soi −
M1 for [gradient = ] 39 9 oe − 23 17 − 1
M1 for their gradient
M1 for substitution of their midpoint into their y = mx + c oe
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