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aryal191
02.08.2019 •
Mathematics
Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b plss hurry im being timed
1 a=2 b=8
2 a=-2 b=8
3 a=2 b=-8
4 a=-2 b=-8
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Ответ:
A=-2
B=-8
Step-by-step explanation:
In order for the system of linear equations to have infinitely many solution, they must be the same equation.
Ax-y=8
2x+y=B
We need to choose A and B so they are the same equation.
I notice they are both in the same form but in the second column you have opposites;
the -y and y.
So im going to multiply either equation by -1 so that part is exactly the same.
Don't choose both; choose only one.
Let's multiply the first equation by -1.
Doing this gives us the following:
-Ax+y=-8
2x+y=B
So now we can choose A and B so these equations appear exactly the same.
We need -A=2 and B=-8.
-A=2 implies A=(opposite of 2) which is -2.
Conclusion:
A=-2
B=-8
Ответ:
A = -2 and B = -8.
Step-by-step explanation:
Two lines
have infinite many solutions if
The given equations are
These equations have infinite many solutions if
Hence, the value of A is -2 and the value of B is -8.
Ответ:
sorry but i have n idea buddy ask siri
Step-by-step explanation: