Q: Solve the system of linear equations below.
x + y = 4
2x + 3y = 0

A: x + y = 4, then x = 4 - y 2x + 3y = 2 (4 - y) + 3y = 0 Simplify the equation we get y = -8 so x = 4 - y = 12

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Asked 2/4/2013 5:52:25 AM

Updated 2/4/2013 6:06:56 AM

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x + y = 4, then x = 4 - y

2x + 3y = 2 (4 - y) + 3y = 0

Simplify the equation we get y = -8

so x = 4 - y = 12

2x + 3y = 2 (4 - y) + 3y = 0

Simplify the equation we get y = -8

so x = 4 - y = 12

Added 2/4/2013 6:06:56 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [9/1/2014 5:53:16 AM]

Evaluate the expression below when y = -3.
2y + 7 and
-4y - 10
Select one of the options below as your answer: A. -1,
22
B. -13
2,
C. 1,
2
D. 1 **Weegy:** The answer is B - 3 cm. Actually, it's 2.99 - but we round up. The circumference is 18.84cm. (More)

Question

Expert Answered

Updated 9/1/2014 6:00:25 AM

1 Answer/Comment

2y + 7 and -4y - 10, y = -3;

2y + 7

= 2(-3) + 7

= -6 + 7

= 1;

-4y - 10

= -4(-3) - 10

= 12 - 10

= 2

Answers are 1 and 2.

2y + 7

= 2(-3) + 7

= -6 + 7

= 1;

-4y - 10

= -4(-3) - 10

= 12 - 10

= 2

Answers are 1 and 2.

Added 9/1/2014 6:00:13 AM

This answer has been confirmed as correct and helpful.

What is the slope of the line defined by the equation 3x - 4y = 5?Select one of the options below as your answer: A. - 5
4
B. 3
4
C. 4
3
D. 3 **Weegy:** The slope of the line defined by the equation 3x - 4y = 5 is 3/4. (More)

Question

Expert Answered

Updated 9/1/2014 6:00:58 AM

0 Answers/Comments

What is the slope of the line defined by the equation 2x + 3y = 18?Select one of the options below as your answer: A. - 3
2
B. - 2
3
C. 2 D. 6 **Weegy:** The answer is D. 6
(More)

Question

Expert Answered

Updated 9/1/2014 6:04:03 AM

1 Answer/Comment

The slope of the line defined by the equation 2x + 3y = 18 is -2/3.

2x + 3y = 18 (divide all terms by 3)

(2x/3) + (3y/3) = 18/3;

2/3x + y = 9;

y = -2/3x + 9

2x + 3y = 18 (divide all terms by 3)

(2x/3) + (3y/3) = 18/3;

2/3x + y = 9;

y = -2/3x + 9

Added 9/1/2014 6:03:59 AM

This answer has been confirmed as correct and helpful.

What is the slope of the line defined by the equation 3x - y = 0?Select one of the options below as your answer: A. -3 B. 0 C. 1
3
D. 3 **Weegy:** If a translation is defined by (x, y) (x - 2, y + 3), the image of the preimage point is (-4, 7). Hope this helps (More)

The slope of the line defined by the equation 3x - y = 0 is 3.

3x - y = 0 (divide all terms by -1)

-3x + y = 0;

y = 3x

Question

Expert Answered

Updated 9/1/2014 6:06:12 AM

1 Answer/Comment

The slope of the line defined by the equation 3x - y = 0 is 3.

3x - y = 0 (divide all terms by -1)

-3x + y = 0;

y = 3x

Added 9/1/2014 6:06:09 AM

This answer has been confirmed as correct and helpful.

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