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thedocgalloway
01.11.2019 •
Mathematics
What is the solution to the system of equations that contains -3x + y = 3 and 2x - y = -1
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Ответ:
2x - y = -1
2x - 2x - y = -1 - 2x
-y = -1 - 2x
Y = 1 + 2x
Y = 2x + 1
-3x + y = 3
-3x + (2x + 1) = 3
-3x + 2x + 1 = 3
-X + 1 = 3
-X + 1 - 1 = 3 - 1
-X = 2
X = -2.
Y = 2x + 1
Y = 2(-2) + 1
Y = -4 + 1
Y = -3.
P(-2,-3). The solution to this system of equations is P(-2,-3).
Ответ:
A. (3, 10)
Step-by-step explanation:
You are told that ...
(x, y) = (number of accessories, dollars)
and you are told that ...
number of accessories = 3
dollars = 10
so the ordered pair is ...
(x, y) = (3, 10) . . . . Point A