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m = (y2-y1)/(x2-x1)
3 = ( 1 - 2k +1)/(3-5)
3 = (2 - 2k)/(-2)
2 - 2k = -6
-2k = - 8
k = 4
2)
3(5-3x) - 4(y+2) = 0
3(5-3x) = 4(y+2)
-9x +15 = 4y + 8
m = koef x / koef y = -9/4