Объяснение:
y=−4x
x−y=30 x−(-4х) =30 5х=30 х=6 у=-4*6=-24 (6; -24)
1.
y=-4x
x-y=30
2.
x=30+y
3.
x=30-4x
4.
5x=30
5.
y=-4*(30/5)
x=30/5
6.
y=-24
x=6
S={6,-24}
Объяснение:
y=−4x
x−y=30 x−(-4х) =30 5х=30 х=6 у=-4*6=-24 (6; -24)
1.
y=-4x
x-y=30
2.
x=30+y
3.
y=-4x
x=30-4x
4.
y=-4x
5x=30
5.
y=-4*(30/5)
x=30/5
6.
y=-24
x=6
S={6,-24}