QUESTION IMAGE
Question
which of these systems of equations have a solution of (-12, 10)? select all that apply.
$y = -x - 2$
$-2x - y = 14$
$y = -3x - 26$
$y = 2x + 34$
$x = 12$
$x + y = -2$
$5x + 5y = -10$
$x - y = -22$
$3x + 4y = -4$
$y = -4x - 36$
$y = -5x - 50$
$y = 10$
To determine which systems of equations have a solution of \((-12, 10)\), we substitute \(x = -12\) and \(y = 10\) into each equation of the system and check if both equations are satisfied.
System 1: \(y = -x - 2\) and \(-2x - y = 14\)
- For \(y = -x - 2\):
Substitute \(x = -12\) and \(y = 10\):
\(10 = -(-12) - 2 = 12 - 2 = 10\). This is true.
- For \(-2x - y = 14\):
Substitute \(x = -12\) and \(y = 10\):
\(-2(-12) - 10 = 24 - 10 = 14\). This is true.
So, this system has a solution of \((-12, 10)\).
System 2: \(y = -3x - 26\) and \(y = 2x + 34\)
- For \(y = -3x - 26\):
Substitute \(x = -12\) and \(y = 10\):
\(10 = -3(-12) - 26 = 36 - 26 = 10\). This is true.
- For \(y = 2x + 34\):
Substitute \(x = -12\) and \(y = 10\):
\(10 = 2(-12) + 34 = -24 + 34 = 10\). This is true.
So, this system has a solution of \((-12, 10)\).
System 3: \(x = 12\) and \(x + y = -2\)
- For \(x = 12\):
The given \(x\) in the solution is \(-12\), not \(12\). So, this equation is false.
Thus, this system does not have a solution of \((-12, 10)\).
System 4: \(5x + 5y = -10\) and \(x - y = -22\)
- For \(5x + 5y = -10\):
Substitute \(x = -12\) and \(y = 10\):
\(5(-12) + 5(10) = -60 + 50 = -10\). This is true.
- For \(x - y = -22\):
Substitute \(x = -12\) and \(y = 10\):
\(-12 - 10 = -22\). This is true.
So, this system has a solution of \((-12, 10)\).
System 5: \(3x + 4y = -4\) and \(y = -4x - 36\)
- For \(3x + 4y = -4\):
Substitute \(x = -12\) and \(y = 10\):
\(3(-12) + 4(10) = -36 + 40 = 4
eq -4\). This is false.
Thus, this system does not have a solution of \((-12, 10)\).
System 6: \(y = -5x - 50\) and \(y = 10\)
- For \(y = -5x - 50\):
Substitute \(x = -12\) and \(y = 10\):
\(10 = -5(-12) - 50 = 60 - 50 = 10\). This is true.
- For \(y = 10\):
The given \(y\) in the solution is \(10\), so this is true.
So, this system has a solution of \((-12, 10)\).
Final Answer
The systems of equations that have a solution of \((-12, 10)\) are:
- \(y = -x - 2\) and \(-2x - y = 14\)
- \(y = -3x - 26\) and \(y = 2x + 34\)
- \(5x + 5y = -10\) and \(x - y = -22\)
- \(y = -5x - 50\) and \(y = 10\)
Snap & solve any problem in the app
Get step-by-step solutions on Sovi AI
Photo-based solutions with guided steps
Explore more problems and detailed explanations
To determine which systems of equations have a solution of \((-12, 10)\), we substitute \(x = -12\) and \(y = 10\) into each equation of the system and check if both equations are satisfied.
System 1: \(y = -x - 2\) and \(-2x - y = 14\)
- For \(y = -x - 2\):
Substitute \(x = -12\) and \(y = 10\):
\(10 = -(-12) - 2 = 12 - 2 = 10\). This is true.
- For \(-2x - y = 14\):
Substitute \(x = -12\) and \(y = 10\):
\(-2(-12) - 10 = 24 - 10 = 14\). This is true.
So, this system has a solution of \((-12, 10)\).
System 2: \(y = -3x - 26\) and \(y = 2x + 34\)
- For \(y = -3x - 26\):
Substitute \(x = -12\) and \(y = 10\):
\(10 = -3(-12) - 26 = 36 - 26 = 10\). This is true.
- For \(y = 2x + 34\):
Substitute \(x = -12\) and \(y = 10\):
\(10 = 2(-12) + 34 = -24 + 34 = 10\). This is true.
So, this system has a solution of \((-12, 10)\).
System 3: \(x = 12\) and \(x + y = -2\)
- For \(x = 12\):
The given \(x\) in the solution is \(-12\), not \(12\). So, this equation is false.
Thus, this system does not have a solution of \((-12, 10)\).
System 4: \(5x + 5y = -10\) and \(x - y = -22\)
- For \(5x + 5y = -10\):
Substitute \(x = -12\) and \(y = 10\):
\(5(-12) + 5(10) = -60 + 50 = -10\). This is true.
- For \(x - y = -22\):
Substitute \(x = -12\) and \(y = 10\):
\(-12 - 10 = -22\). This is true.
So, this system has a solution of \((-12, 10)\).
System 5: \(3x + 4y = -4\) and \(y = -4x - 36\)
- For \(3x + 4y = -4\):
Substitute \(x = -12\) and \(y = 10\):
\(3(-12) + 4(10) = -36 + 40 = 4
eq -4\). This is false.
Thus, this system does not have a solution of \((-12, 10)\).
System 6: \(y = -5x - 50\) and \(y = 10\)
- For \(y = -5x - 50\):
Substitute \(x = -12\) and \(y = 10\):
\(10 = -5(-12) - 50 = 60 - 50 = 10\). This is true.
- For \(y = 10\):
The given \(y\) in the solution is \(10\), so this is true.
So, this system has a solution of \((-12, 10)\).
Final Answer
The systems of equations that have a solution of \((-12, 10)\) are:
- \(y = -x - 2\) and \(-2x - y = 14\)
- \(y = -3x - 26\) and \(y = 2x + 34\)
- \(5x + 5y = -10\) and \(x - y = -22\)
- \(y = -5x - 50\) and \(y = 10\)