Question

Persamaan garis yang melalui titik (2,-5) dan sejajar garis x-2y+4=0 adalah.??
a. 2x+y-9=0
b. 2x+y+1=0
c. -x+2y+12=0
d. -2x+y+1=0
dikasih cara ya..

Answer 1

X - 2y + 4 = 0
-2y = -x - 4
2y = x + 4
y = 1/2x + 2

y = mx + c
m = 1/2

y - b = m(x - a)
y - (-5) = 1/2(x - 2)
y + 5 = 1/2x - 1
y - 1/2x + 5 + 1 = 0
y - 1/2x + 6 = 0
2y - x + 12 = 0
-x + 2y + 12 = 0