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Vsevolod [243]
2 years ago
9

Solve this system of equations, then determine what y equals.

Mathematics
2 answers:
Vsevolod [243]2 years ago
8 0
2+2=4 and 4+4=8 and 8+8=16
MArishka [77]2 years ago
7 0

x+5y = 7~~~....(i)\\\\\\2x+4y = -4~~~.....(ii)\\\\\\\text{Multiply equation (i) by 2,}\\\\\\2x+10y = 14~~~.....(iii)\\\\\\(iii) - (ii):\\\\2x+10y-2x-4y = 14-(-4)\\\\\implies 6y = 14+4\\\\\implies 6y = 18\\\\\implies y = \dfrac{18}6\\\\\implies y = 3

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Question 9
Katena32 [7]

we can conclude that the range is:

(0, 5), (-16, -1), (12, 4)

Which is the first option (counting from the top).

<h3>How to find the range?</h3>

When we have a relation:

x⇒f(x) = y

We define the domain as the set of possible inputs, and the range as the set of possible outputs.

In this case, we know that the domain is:

(0, 5), (8, -1), (-6, 4)

And the transformation is:

f(x, y) = (-2x, y)

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f(0, 5) = (-2*0, 5) = (0, 5)

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Then we can conclude that the range is:

(0, 5), (-16, -1), (12, 4)

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If you want to learn more about domain and range:

brainly.com/question/10197594

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