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Solve. {y=x−7 {5x+2y=7 Use the substitution method. A. (−1, −8) B. (0, −7) C. (7, 0) D. (3, −4)
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4 votes
Solve.

{y=x−7
{5x+2y=7

Use the substitution method.

A. (−1, −8)

B. (0, −7)

C. (7, 0)

D. (3, −4)

User Taxilian
by
5.8k points

1 Answer

3 votes
The answer would be D. (3, -4).

Work:
3 = x
-4 = y
3 • 5 = 15
-4 • 2 = -8
15 + -8 = 7

To check: y = x - 7
-4 = 3 - 7
3 - 7 = -4
User Bubblebath
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