nomor 15 16 pleaseee...

15) melalui titik (5, -3) gradien (m) sejajar maka gradiennya sama yaitu ⅓
y + 3 = ⅓(x - 5)
y + 3 = ⅓x - 5/3
y = ⅓x - 5/3 - 3
semua kali 3
3y = x - 5 - 9
3y = x - 14
3y - x = -14
(D)

16) melalui (5, -3) m = -⅔ gradien tegak lurus maka m1 . m2 = -1
m1 . m 2 = -1
-⅔ . m2 = -1
m2 = -1 . -3/2
m2 =3/2
y + 3 = 3/2(x - 5)
y + 3 = 3/2x - 15/2
y = 3/2x - 15/2 - 3
semua kali 2
2y = 3x - 15 - 6
2y = 3x - 21
2y + 3x = -21

klo mau ada jawaban
(5,-3) m = -2/3
y + 3 = -2/3(x - 5)
y + 3 = -2/3x + 10/3
y = -2/3x + 10/3 - 3
semua kali 3
3y = -2x + 10 - 9
3y + 2x = 1