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2y + 2 = -7/4x + 49/4
2y = -7/4x + 49/4 - 2
2y = -7/4x + 41/4
y = -7/8 + 41/8
gradien = -7/8
Agar tegak lurus, maka :
m x -7/8 = -1
m = 8/7
Persamaan garis :
(y - y₁) = m(x - x₁)
(y - (-3) ) = 8/7 (x - (-2) )
y + 3 = 8/7 (x + 2)
y + 3 = 8/7x + 16/7 -----atau sama juga dengan-------> 7y + 21 = 8x + 16
Jika kurang yakin, silakan di komen yah