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Verified answer
GarisBentuk umum :
ax + by + c = 0 ---> m = -a/b
y = mx + c --> gradien = m
•••
3x - y + 5 = 0
m1 = -a/b = -3/-1 = 3
y = 3x - 8
m2 = 3
m1 = m2
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