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- 7y = - 4x + 5
y = -4/7 x + 5
gradiennya = -4/7
2. pake rumus y-y1/y2-y1 = x-x1/x2-x1
y-2/7-2 = x-(-2)/2-(-2)
y-2/5 = x+2/4
4y-8 = 5x+10
-5x + 4y - 8 - 10 =0
-5x + 4y - 18 =0
5x - 4y + 18 =0
3. pake rumus y-y1 = m(x - x1)
y-(-6) = 3/2 (x-(-2))
y + 6 = 3/2x + 3
semua dikali 2 , 2y + 12 = 3x + 6
-3x + 2y + 12 - 6 = 0
3x - 2y - 6 = 0