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⇔ (x-1)² + )y-3)² = 16
4y = 3x + 7 ⇒ y = (3/4)x + 7/4 ⇒ m = 3/4
persamaan grs singgung
y-b = m(x-a) +- r√(m² + 1)
y - 3 = 3/4(x-1) +- 4√{(3/4)² + 1)
y = (3/4)(x-1) +-4(5/4) + 3
y = 3x -3 +- 5 + 3
4
y = 3x -3 + 5+3 atau y= 3x - 3 -5 +3
4 4
y = (1/4)(3x-3) + 8 atau y = (1/4)(3x-3) - 2