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Greeley [361]
3 years ago
9

Solve the system by substitution. y = -3x + 4 y = -7x Submit Answer

Mathematics
1 answer:
iVinArrow [24]3 years ago
5 0

Answer:

{y,x} = {7,-1}

Step-by-step explanation:

(-7x) + 3x = 4

- 4x = 4

 4x = - 4

x = - 1

   y = -7x

   x = -1

   y = -7(-1) = 7

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Answer:$4000 was invested into the account earning 6% interest.

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