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2x + 5y = 10
m1 = -a/b
m1 = -2/5
m1 = m2
-2/5 = m2
y - y1 = m(x - x1)
y - 3 = -2/5(x - 0)
y - 3 = -2/5x + 0
5y - 15 = -2x
5y = -2x + 15
5y = -2x + 15
5y + 2x = 15
2x + 5y = 15
Jadi jawabannya yg A.
y-b=m(x-a)
y-3=-2/5(x-0)
y-3=-2/5x+0
5y-15=-2x
2x+5y-15=0
cmiiw