emoryjoshua
emoryjoshua emoryjoshua
  • 15-01-2021
  • Mathematics
contestada

Use SUBSTITUTION to solve the system
y=4x
2y-2x=12

Respuesta :

deng67
deng67 deng67
  • 15-01-2021
1 Substitute
y
=
2
x
−
10
y=2x−10 into
y
=
4
x
−
8
y=4x−8.
2
x
−
10
=
4
x
−
8
2x−10=4x−8

2 Solve for
x
x in
2
x
−
10
=
4
x
−
8
2x−10=4x−8.
x
=
−
1
x=−1

3 Substitute
x
=
−
1
x=−1 into
y
=
2
x
−
10
y=2x−10.
y
=
−
12
y=−12

4 Therefore,
x
=
−
1
y
=
−
12

​

x=−1
y=−12
​
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