Question

Tolong bantuannya plisssssssssssss

Answer 1

Dilatasi di O(0,0)

x' = kx
y' = ky

x' = 2(1)
y' = 2(3)

x' = 2
y' = 6

= (2, 6)

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Dilatasi di P(a,b)

x' = a + k(x - a)
y' = b + k(y - b)

x' = 2 + (-1/2)(-1 -2)
y' = 3 + (-1/2)(2 - 3)

x' = 2 + (-1/2)(-3)
y' = 3 + (-1/2)(-1)

x' = 2 + 3/2
y' = 3 + 1/2

x' = 4/2 + 3/2
y' = 6/2 + 1/2

x' = 7/2
y' = 7/2

= (7/2, 7/2)