Смотри /////////////////////////
Y = kx - 5
3 = - 4k - 5
- 4k - 5 = 3
- 4k = 8
k = - 2
Answer:
Arrange the equations. You get
x
=
5
and
y
=
2
Explanation:
x
−
3
y
=
−
1
−
x
−
2
y
=
−
9
(after multiplying the 2nd equation by -1#
Now add these:
−
5
y
=
−
10
y
=
2
Put this value in the 1st original equation:
x
−
(
3
×
2
)
=
−
1
x
−
6
=
−
1
x
=
−
1
+
6
x
=
5