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TRANSFORMASI GEOMETRI
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7. Tentukan bayangan parabola y = x – 2x – 8 dicerminkan terhadap garis y = -2
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8. Bayangan titik B(-3,7) oleh pencerminan terhadap garis g adalah B’(-3,3)
a. Tentukan persamaan garis g
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b. Tentukan bayangan garis h : 7x + y = 2 oleh pencerminan terhadap garis g !
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9. Diketahui koordinat titik A(5,-4) dan B(8,2). Tentukan bayangan kedua titik tersebut
jika dirotasikan :
0
a. Sejauh 90 searah putaran jarum jam dengan pusat O
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0
b. Sejauh 90 berlawanan arah putaran jarum jam dengan pusat O
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0
10. Bayangan titik (-5,7) oleh rotasi R(P,90 ) adalah (-3,3). Tentukan koordinat titik P !
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11. Tentukan bayangan titik (8, -12) oleh rotasi berikut !
0
a. R(O, 150 )
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0
b. R(P,180 ) dengan P(2,3)
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0
12. Tentukan persamaan bayangan garis 4x + 3y = 7 oleh rotasi sejauh 90 berpusat
dititik O(0,0)!
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2
0
13. Tentukan persamaan bayangan parbola y = x – 6x + 8 oleh rotasi sejauh 90
berpusat dititik O(0,0)!
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14. Diketahui segi empat KLMN dengan koordinat titik K(-1, 2), L(1,-1), M(2,2), dan
N(1,4) di dilatasikan oleh [O,2]. Tentukan koordinat bayangan segi empat KLMN !
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Matematika Wajib / XI.1 16
SMA Nusaputera
