Mathematics B Regents High School Examination Worksheet- University Of The State Of New York, 2007 Page 15

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30 A landscape architect is working on the plans for a new horse farm. He
is laying out the exercise ring and racetrack on the accompanying graph.
The location of the circular exercise ring, with point R as its center, has
already been plotted.
y
16
14
12
Exercise ring
10
R
8
6
4
2
x
–14
–12
–10
–8
–6
–4
–2
0
2
4
6
8 10 12 14 16 18 20 22
24 26
–2
–4
–6
–8
–10
Write an equation that represents the outside edge of the exercise ring.
2
2
y
x
+
=
1
The equation of the outside edge of the racetrack is
.
144
36
Sketch the outside edge of the racetrack on the graph.
[15]
[OVER]
Math. B – June ’07

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