9x+5y-7=0
Объяснение:
x-2y+12=0
x=2y-12
3(2y-12)+y+1=0
6y-36+y+1=0
7y-35=0
7y=35
y=35:7=5
x=2y-12=2·5-12=-2
A(3;-4); B(-2; 5)
x₁=3; x₂=-2; y₁=-4; y₂=5
AB: (x-x₁)/(x₂-x₁)=(y-y₁)/(y₂-y₁)
(x-3)/(-2-3)=(y-(-4))/(5-(-4))
(x-3)/(-5)=(y+4)/9
9(x-3)=-5(y+4)
9x-27=-5y-20
9x-27+5y+20=0
9x+5y-7=0
Объяснение:
x-2y+12=0
x=2y-12
3(2y-12)+y+1=0
6y-36+y+1=0
7y-35=0
7y=35
y=35:7=5
x=2y-12=2·5-12=-2
A(3;-4); B(-2; 5)
x₁=3; x₂=-2; y₁=-4; y₂=5
AB: (x-x₁)/(x₂-x₁)=(y-y₁)/(y₂-y₁)
(x-3)/(-2-3)=(y-(-4))/(5-(-4))
(x-3)/(-5)=(y+4)/9
9(x-3)=-5(y+4)
9x-27=-5y-20
9x-27+5y+20=0
9x+5y-7=0