Question

Tentukan persamaan garis lurus yang melalui titik 3,-1 sejajar dengan garis y=2x+3 menggunakan cara

Answer 1

M= -a
--- = -2
b ----
3

y-y1 = m( x- x1 )
y +1 = -⅔ (x -3)
y+1 = -⅔x + 2
y = -⅔x +2-1
y= -⅔x +1

Answer 2

X1 = 3
y1 = -1
a = 2
b = 3
m1 = -a/b = -2/3
m1 = m2 (karena sejajar)

y - y1 = m2 × ( x - x1 )
y - ( -1 ) = -2/3 × ( x - 3 )
y + 1 = -2/3 × ( x - 3 )
3 × ( y + 1 ) = -2 × ( x - 3 )
3y + 3 = -2x - 3

0 = -2x - 3y - 3 - 3
0 = -2x - 3y - 0