Question

Solve the following system of equations:

−2x + y = 1
−4x + y = −1

(3, 1)
(−1, 3)
(−1, −3)
(1, 3) **

Answer 1

for this you want to eliminate one of the variables for both equations by using any factors

Answer 2

what variable do you think seems easier to eliminate?

Answer 3

use elimination method..

Answer 4

Subtracting both equations yields:

\[-2x-(-4x)=1-(-1) \]

Simplify to obtain:
\[2x=2\]
\[x=1\]
Substitute x=1 into any equation:
\[y=3\]