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y = 5/2 - 2x
m1 = - 2
karena tgk lurus maka :
m2 = -1 : m1 = - 1 : -2 = 1/2
persamaannya:
y + 3 = 1/2 (x - 4)/
2y + 6 = x - 4
2y = x - 10 atau 2y + 10 = x atau 2y - x = -10
4x + 2y -5 = 0
= - 4 / 2
= -2
= - 1 / - 2
= 1/2
y -
y - (-3) = 1/2 (x - 4) <<< Masing" kali 2
2 (y + 3) = x - 4
2y + 6 = x - 4
0 = x - 2y - 4 - 6
0 = x - 2y - 10