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y-y1/y2-y1 = x-x1/x2-x1
y-8/5-8 = x+3/2+3
y-8/-3 = x+3/5
kdua ruas kali silang menjadi :
-3.(x+3) = 5.(y-8)
-3x-9 = 5y-40
atau
3x+5y-31 = 0
Tegak lurus, Jadi 5/3
5x - 3y = 5(2) - 3(5)
5x - 3y = 10 - 15
5x - 3y = -5
5x - 3y + 5 = 0
Maap kalo salah :v