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Tentukan Gradien ( m )
( - 4 - ( - 3 ) ) / ( - 1 - 2 ) = - 1/ - 3 = 1/3
m = 1/3
Misalkan y = 1/3x + c
Masukkan x = 2 dan y = - 3
- 3 = 2/3 + c
- c = 11/3
c = - 11/3
Masukkan c ke persamaan awal
y = 1/3x - 11/3