mohon bantuannya tugas besok terima kasih sama caranyaa juga

1. 3x-2y=17
m1 = -a/b
m1 = -3/-2
m1 = 3/2
Karena tegak lurus, maka:
m1 × m2 = -1
3/2 × m2 = -1
m2 = -1/ 3/2
m2 = 2/3
Pers. garis melalui A(7,-5) tegak lurus m2 = 2/3
y - y1 = m × (x - x1)
y - (-5) = 2/3 × (x - 7)
y + 5 = 2x/3 - 14/3 kalikan 3 kedua ruas
3y + 15 = 2x - 14
2x - 3y = 29

3. (16,120°)
x = r × cos α
x = 16 × cos 120°
x = 16 × (-1/2)
x = -8

y = r × sin α
y = 16 × sin 120°
y = 16 × (akar 3/2)
y = 8 akar 3