Bantuin gih kak 13 14, makasih

13) turunan = 0
2x - 6 = 0
2x = 6
x = 3
14) 5x + 3y - 2 = 0 gradien = m = -5/3
karena sejajar maka gradien nya sama -5/3
(x1,y1) = (-3,2)
y - y1 = m(x - x1)
y - 2 = -5/3(x - (-3))
y - 2 = -5/3x - 5
y + 5/3x = -5 + 2
y + 5/3x = -3
------------------- × 3
3y + 5x = -9
5x + 3y + 9 = 0