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(x + 2)² + (y - 1)² = 4
pusat: (-2, 1)
melalui garis: 4y = 3x + 1
y = (3/4)x + 1/4
m = 3/4
Persamaan garis singgungnya:
y - b = m(x - a)
y - 1 = (3/4)(x + 2)
4y - 4 = 3x + 6
3x - 4y + 10 = 0