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Phoenix [80]
3 years ago
9

Solve the system of linear equations by substitution. 6x−9=y y=−3x

Mathematics
2 answers:
Julli [10]3 years ago
5 0

Answer:

x = 1

y =  - 3

Step-by-step explanation:

nikitadnepr [17]3 years ago
3 0

Answer:

(1, -3)

y= -3

x= 1

Step-by-step explanation:

6x - 9 = y \\ y =  - 3x \\ solve \: using \: comparison \: method

6x-9= -3x \\subtract \:6x\: from \:both sides

-9x= -9\\ divide\: both \:sides\: by \:-9

x= 1\\substitute \:the\: value \:of\: x \:into\: an \:equation

y= -3×1\\ multiply\: -3\: to\: 1

y= -3

(1,-3)

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3 years ago
PLEASE HELP ASAP!!! I don’t know how to do this problem or where to start! How do I solve this?
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Answer:

W = 4.95

Step-by-step explanation:

You want to start by writing down what you know, and forming a system of equations.

L= length W= width

2L+2W=14.7    

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On the left side of the equation, you're adding all your side lengths, and on the right, is the total perimeter. (Also could be written L+L+W+W = 14.7)

You would then substitute L from the bottom equation into the top equation to get:

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Solving:

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To check your answer simply add all the sides together and make sure it equals your perimeter. You can also plug W and L back into the original equation.

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3 years ago
The points (0, 2), (1, 3), (2, 6), and (3, 11) are on the graph of a function. Which of the following equations represents that
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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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finding the LCM of 9 and 12 using the prime factor method :

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3 years ago
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