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m = y₂ -y₁
x₂ -x₁
m = 3 -(-2)
-1 -5
m = 5/-6
m = -5/6
m₁ . m₂ = -1
-5/6 . m₂ = -1
m₂ = -1 : -5/6
m₂ = 6/5
Jadi, gradiennya adalah 6/5.
Itu jawabannya.
x₁= 5 y₁= -2
x₂= -1 y₂= 3
m₁= ( y₂ - y₁ ) / ( x₂ - x₁)
m₁= (3 - (-2)) / (-1 - 5)
m₁= (3 + 2) / ( -6)
m₁= 5 / -6
m₁= -5/6
karena tegak lurus, maka :
m₁ × m₂= -1
-5/6 × m₂= -1
m₂= -1 : -5/6
m₂= -1 × -6/5
m₂= 6/5
Jadi, gradien yang tegak lurus adalah 6/5