tolong dikerjakan dengan pakai jalan

27) ttk A = ( 0,3 )
ttk B = ( 4,0 )
m = ( y2 - y1 ) / ( x2 - X1 )
m = ( 0 - 3 ) / ( 4 - 0 )
m = - 3/4 ( B )

28) 3x - 2y = 10
- 2y = - 3x + 10
m = x/y
m = - 3/-2
m = 3/2 ( D )

29) 3x + 2y = 10
2y = - 3x + 10
m = - 3/2
tegak lurus
m1 . m2 = - 1
- 3/2 . m2 = - 1
m2 = ⅔ ( C )

30) m = ( y2 - y1 ) / ( x2 - X1 )
m = ( 4 + 1 ) / ( 3 - 2 )
m = 5 / 1
m = 5
subtitusi ke salah satu titik
y - y1 = m ( x - X1 )
y + 1 = 5 ( x - 2)
y = 5x - 10 - 1
y = 5x - 11 ( D )