Question

Garis G tegak lurus dengan garis 2x + 5y -1 = 0 dan melalui titik ( 2 , 3 ) persamaan garis G adalah

Answer 1

M = -a/b = -2/5 = 2/5
m×m2 = -1 × 2/5 = -2/5

y-y1 = m ( x-x1 )
y-3 = -2/5 ( x-2 )

5y-15 = -2 ( x-3 )
5y = -2x + 6 + 15

5y = -2x + 21
-2x - 5y + 21
+2x + 5y - 21