Question

Ada yg tau jawabannya? 1-5 tolong kerjain ea 15 poin neh:v

Answer 1

Verified answer

1) y = 2x + 5
m = 2
sejajar m1 = m2 = 2
pers garis
y - y1 = m ( x - x1)
y - 5 = 2 ( x - 1)
y = 2x - 2 + 5
y = 2x + 3

2) 3x + 2y - 12 = 0
2y = - 3x + 12
m = - 3/2
sejajar m1 = m2 = - 3/2
pers garis
y - y1 = m ( x - x1)
y - 6 = - 3/2 ( x + 2)
y = - 3/2 x - 3 + 6
y = - 3/2 x + 3 ( dikali 2)
2y = - 3x + 6
2y + 3x = 6

3) 3y - x + 6 = 0
3y = x - 6
m = ⅓
tegak lurus
m1 . m2 = - 1
⅓ . m2 = - 1
m2 = - 3
pers garis
y - y1 = m ( x - x1 )
y - 9 = - 3 ( x - 6)
y = - 3x + 18 + 9
y = - 3x + 27
y + 3x = 27

4) y - y1 = m ( x - x1 )
y - 6 = ¼ ( x + 4)
y = ¼x + 1 + 6
y = ¼x + 7 ( dikali 4)
4y - x = 28

5) ( y - y1 ) / ( y2 - y1 ) = ( x - x1 ) / ( x2 - x1 )
( y + 2 ) / ( 4 + 2) = ( x - 3) / ( 1 - 3)
( y + 2) / 6 = ( x - 3) / -2
-2 ( y + 2) = 6 ( x - 3)
- 2y - 4 = 6x - 18
- 2y - 6x = - 18 + 4
- 2y - 6x = - 14
2y + 6x = 14