rotasi 90 berlawanan arah jarum jam x' = x atau x = x' y' = - y atau y = - y' substitusikan ke garis 3x + 2y = 4 3(x') + 2(-y') = 4 3 x' - 2y' = 4 bayangan nya 3x - 2y = 4
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RJ42
Rotasi 90 berlawanan arah jarum jam ×' = × atau × = ×' y' = -y atau y = -y' substitusikan ke garis 3× + 2y = 4 3 (×') + 2 (-y') = 4 3 ×' - 2y' = 4 Bayangannya 3× - 2y = 4
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Jawabrotasi 90 berlawanan arah jarum jam
x' = x atau x = x'
y' = - y atau y = - y'
substitusikan ke garis
3x + 2y = 4
3(x') + 2(-y') = 4
3 x' - 2y' = 4
bayangan nya 3x - 2y = 4
×' = × atau × = ×'
y' = -y atau y = -y'
substitusikan ke garis
3× + 2y = 4
3 (×') + 2 (-y') = 4
3 ×' - 2y' = 4
Bayangannya 3× - 2y = 4