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How many solutions does this linear system have? y=2x-5 -8x-4y=-20 A.One solution (-2.5,0) B.One Solution (2.5,0) C.No Solution D.Infinite Number of Solutions
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Nov 4, 2018
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How many solutions does this linear system have?
y=2x-5
-8x-4y=-20
A.One solution (-2.5,0)
B.One Solution (2.5,0)
C.No Solution
D.Infinite Number of Solutions
Mathematics
high-school
Bradrar
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Bradrar
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You can simplify the second equation by divining both sides by 4
Which gives you -2x -y =-5
Rearrange the terms and it'll give you y=-2x+5
Gurinder
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Nov 5, 2018
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Gurinder
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B. y=2x-5
-4y=8x-20
y=-2x+5
2x-5=-2x+5
x=2.5
2x*2.5-5=0
-2x*2.5+5=0
so (2.5,0)
JohnCz
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Nov 9, 2018
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