Question

5. Garis n melalui titik A(-8,5) dan sejajar garis 3y+5x-30=0 .Tentukan persamaan garisnya!
28.Gradien garis k yang tegak lurus dengan garis -2y-5x-1=0 adalah

Answer 1

No 5

3y+5x-30 = 0
a = 5
b = 3

m1 =

m1 =

m2 = m1
m2 = -5/3


y-y1 = m(x-x1)
y-5 = -5/3 (x+8)
y-5 = -5x/3 -40/3
y = -5x/3 -40/3 + 5
y = -5x/3 -40/3 + 15/3
y = -5x/3 -25/3
------------------------- x 3
3y = -5x-25

no 28
-2y-5x-1 = 0
a = -5
b = -2

m1 =

m1 =

m1 =

m1 =

m2 =

m2 =

m2 =

m2 = 2/5