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

{ 5x+2y=7

Use the substitution method.


A- (−1, −8)
B- (3, −4)
C- (7, 0)
D- (0, −7)

User Cuneyt
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1 Answer

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Substitute value of y from equation 1st into 2nd,
5x + 2y = 7
5x + 2(x - 7) = 7
5x + 2x - 14 = 7
7x = 7 + 14
x = 21 / 7
x = 3

Now, y = 3 - 7 = -4

In short, Your Answer would be Option B) (3, -4)

Hope this helps!
User Bihag Kashikar
by
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User Taxilian
asked May 4, 2019 53.4k views
Solve. {y=x−7 {5x+2y=7 Use the substitution method. A. (−1, −8) B. (0, −7) C. (7, 0) D. (3, −4)
Taxilian asked May 4, 2019
by Taxilian
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