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= -3/-5
= 3/5
m2 = -1 : m1
= -1 : 3/5
= -1 : 5/3
= - 5/3
persamaan garis tersebut
y - y₁ = m₂ ( x - x₁)
y - 3 = -5/2 ( x - (-7))
y - 3 = -5/2 ( x + 7)
y - 3 = -5/2x - 35/2 ---> sederhanakan x 2
2y - 6 = - 5x - 35
5x + 2y = - 35 + 6
5x + 2y = - 29
untuk membuat grafiknya
x = 0 maka nilai y = ?
5x + 2y = -29
5(0) + 2y = - 29
2y = -29
y = -29/2
melalui titik ( 0, - 29/2)
y = 0 maka nilai x = ?
5x + 2y = - 29
5x + 2(0) = -29
5x = -29
x = -29/5
melalui titik ( -29/5 , 0 )