behappy0217 behappy0217

22-10-2017
Mathematics

contestada

HELP PLEASE
Solve the system by substitution
-4.5x - 2y = -12.5
3.25x - y = -0.75

Respuesta :

daijingyi722 daijingyi722

22-10-2017

from the second equation ,we can know that y=3.25x+0.75
plug it into the first equation
-4.5x-2(3.25x+0.75)=-12.5
-4.5x-6.5x-1.5=-12.5
-11x=-11
x=1
plug it back into the second equation, y=3.25x+0.75=4
the answer would be (1,4)

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krissy24 krissy24

22-10-2017

You can also go on mathwey it would solve it fast

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