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podryga [215]
4 years ago
5

Solve using elimination. -7x – 5y = -4 7x + 9y = -4

Mathematics
1 answer:
Brut [27]4 years ago
5 0
-7x-5y=-47x+9y=-4

combine like terms to cross out the 7x
solve for y, to get -2
plug it back in to one of the equations and x is 2

y=-2
x=2
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Answer:

k = 2

Step-by-step explanation:

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At the intersection point:

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Answer:

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Differentiating with respect to time we get

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