mohon bantuannya yaaa

a) y - y1 = m ( x - x1 )
y - 3 = - 2 ( x + 4 )
y = - 2x - 4 + 3
y + 2x = - 1

b) m = ( y2 - y1 ) / ( x2 - x1 )
m = ( - 5 + 3 ) / ( - 6 - 5)
m = - 2 / - 11
m = 2/11
y - y1 = m ( x - x1 )
y - 3 = 2/11 ( x + 4 )
y = 2/11 x + 8/11 + 3 ( dikali 11)
11y = 2x + 8 + 33
11y - 2x = 41

c) y + 2x - 6 = 0
y = - 2x + 6
m = - 2/1
m = - 2
gradien saling tegak lurus
m1 . m2 = - 1
- 2 . m2 = - 1
m2 = - 1/-2
m2 = ½
pers garis
y - y1 = m ( x - x1 )
y - 3 = ½ ( x + 4 )
y = ½ x + 2 + 3
y = ½x + 5