Weegy: 3x + 2y = 4 2x - y = 5 This system of equations has one solution.
***Solve the following system:
{3 x+2 y = 4 | (equation 1)
2 x-y = 5 | (equation 2)
Subtract 2/3 ? (equation 1) from equation 2:
{3 x+2 y = 4 | (equation 1)
0 x-(7 y)/3 = [ 7/3 | (equation 2)
Multiply equation 2 by 3/7:
{3 x+2 y = 4 | (equation 1)
0 x-y = 1 | (equation 2)
Multiply equation 2 by -1:
{3 x+2 y = 4 | (equation 1)
0 x+y = -1 | (equation 2)
Subtract 2 ? (equation 2) from equation 1:
{3 x+0 y = 6 | (equation 1)
0 x+y = -1 | (equation 2)
Divide equation 1 by 3:
{x+0 y = 2 | (equation 1)
0 x+y = -1 | (equation 2)
Collect results:
Answer: |
| {x = 2
y = -1
]
User: Find the slope of the line passing through the points (3, 8) and (-2, 5).
3
3/5
13
Weegy: B.3/5
User: Find the x-intercept of the line whose equation is 10x + 3y = 1.
1/3
1/10
Weegy: The x-intercept of the equation 10x + 3y = 1 is letter B, 1/10. The x-intercept is the value of x when y is equal to zero.
User: Find the solution to the equations.
2x - y = -3
x + y = 0
(0, 0)
(-1, 1)
(1, -1)
Weegy: A.(0, 0) is the answer. x=0, y=0
User: 8x + 13y = 2
y = x- 2
Solve the system of equations
(4/3, -2/3)
(4/21, -38/21)
no solution
Weegy: Mathematically speaking, the answer would be x = 22/27, y = -16/27. Source: Wolfram|Alpha
User: Choose the correct graph to fit the equation.
3y = 2x + 3
Weegy: The answer is x=3n, y-2(n-1)
User: Find the slope of the line whose equation is 7x - 2y = 4.
7/2
-2
4/7
Weegy: the answer is 25
User: Find the slope of the line whose equation is 7x - 2y = 4.
7/2
-2
4/7
Weegy: The x-intercept for the line 7x = 2y -3 is: -3/7
User: John made a rectangle pen for his dog using 28 feet of fencing. If the width of the pen is 2 feet more than one-half the length, what is the length and width of the pen?
The length of the pen is
6 feet
7 feet
8 feet
Weegy: The length of the pen is 6 feet
User: Find ...
(More) 8
2x - y = -3
x + y = 0
adding up the equations the result is:
3x = -3
x = -1,
2(-1) - y = -3
y = -2 + 3 = 1
The solution for the system 2x - y = -3 x + y = 0 is (-1, 1)
Added 5/14/2014 11:16:10 PM
This answer has been confirmed as correct and helpful.
8
8x + 13y = 2
y = x- 2
institute y in the first equation the result is:
8x + 13(x - 2) = 2
8x + 13x - 26 = 2
21x = 28
x = 28/21 = 4/3;
y = x - 2 = 4/3 - 2 = - 2/3
The solution for the system 8x + 13y = 2 y = x- 2 is (4/3, -2/3)
Added 5/14/2014 11:18:48 PM
This answer has been confirmed as correct and helpful.
8
The slope of the line whose equation is 7x - 2y = 4 is 7/2
Added 5/14/2014 11:19:57 PM
This answer has been confirmed as correct and helpful.
8
The slope of the line whose equation is px - qy = r is p/q.
Added 5/14/2014 11:20:47 PM
This answer has been confirmed as correct and helpful.
