Bantu nomor 3,4,5 dong
Pake caranya ya 🙂
3).
A = (4,5)
A' = (2h – x, y)
= (2(3) – 4,5)
= (6 – 4,5)
= (2,5)
A" = (x, 2k – y)
= (2, 2(-2) – 5)
= (2, -4 – 5)
= (2, -9)
4).
ditranslasikan oleh T1 = (3, -2)
2(x -3) + 3(y + 2) -6 = 0
2x – 6 + 3y + 6 – 6 = 0
2x + 3y – 6 = 0
ditranslasikan oleh T2 = (4, -1)
2(x – 4) + 3(y + 1) – 6 = 0
2x – 8 + 3y + 3 – 6 = 0
2x + 3y – 11 = 0
5).
refleksi oleh garis x = 4
x' = 2h – x
= 2(4) – x
= 8 – x
y' = y
x² + 5y – 10 = 0
(8 – x)² + 5y – 10 = 0
64 – 16x + x² + 5y – 10 = 0
x² – 16x + 5y + 54 = 0
refleksi oleh garis y = 2
x' = x
y' = 2k – y
= 2(2) – y
= 4 – y
x² + 5y – 10 = 0
x² + 5(4 – y) – 10 = 0
x² + 20 – 5y – 10 = 0
x² – 5y + 10 = 0
maaf kalau salah