Systems of equations y=2x+3 y=-x-9

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Question

Systems of equations
y=2x+3
y=-x-9

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Mathematics Thiên Di 2 years 2021-07-29T15:58:38+00:00 2021-07-29T15:58:38+00:00 2 Answers 6 views 0

Answers ( )

linhdan · Answer 1 · 2021-07-29T15:59:50+00:00

linhdan

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2021-07-29T15:59:50+00:00 July 29, 2021 at 3:59 pm

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Answer:

vhguh

Step-by-step explanation:

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Gerda · Answer 2 · 2021-07-29T16:00:24+00:00

Gerda

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2021-07-29T16:00:24+00:00 July 29, 2021 at 4:00 pm

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Answer:

(-4,-5)

Step-by-step explanation:

[tex]y=2x+3\\y=-x-9=>Multiply(2)=>2y=-2x-18\\\\Add\\3y = -15=>y =-5\\\\Substitute\\x=-y-9=>x=-4[/tex]