Use substitution to determine the solution of the system of equations. y = −2x − 7 2y − x = 1 A. (−1,0) B. Question Use substitution to determine the solution of the system of equations. y = −2x − 7 2y − x = 1 A. (−1,0) B. (212,−28) C. (−6,−52) D. (−3,−1) in progress 0 Math 3 months 2022-02-03T04:32:29+00:00 2022-02-03T04:32:29+00:00 2 Answers 0 views 0

## Answers ( )

~

Answer: ✎D. (−3,−1)✎Your answer should be

✎

D. (−3,−1)~Step-by-step explanation:

✐1st Equation: y = -2x -7✐2nd Equation: 2y – x = 1✄From 1 we have y = -2x – 7 put in 22 ( -2x – 7 ) -x = 1 4x – 14 – x = 1- 5x = 1 + 14~~~~~~~~~~~~PLease mark me as brainliest ♡X = 15/- X= – 3✄Now we have to put in equation 1Y = – 2 ( -3) – |Y= 6 –|Y = – 1✄THEN YOUR FINAL ANSWER IS(−3,−1) WICH IS D✄brainliest?? ✄Answer:Option D is correct

( -3, -1 )

Step-by-step explanation:equation 1 is

y = -2x -7

and equation 2 is

2y – x = 1

so from 1 we have y = -2x – 7 put in 2

2 ( -2x – 7 ) -x = 1

-4x – 14 – x = 1

– 5x = 1 + 14

X = 15/-5

X= – 3

put in equation 1

Y = – 2 ( -3) – 7

Y= 6 – 7

Y = – 1