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(7,11)=x2,y2
Rumusnya
Y-y1. X-x1
-------- = -------
Y2-y1. X2-x1
Y-5. X-3
----- = ------
11-5. 7-3
Y-5. X-3
----- = -----
6. 4
4(y-5) = 6(x-3)
4y -20 = 6x-18
4y= 6x-18+20
4y=6x+2
--------------dibagi4
Y=6/4x +2/4
Y=3/2x + 1/2
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