# algebra 1

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y=2x-1
2x-y-1=0

a)this sytem has excatly onw solution
b)this system has indinetly many solutions
c)this system has no solution
d)(1,1) and (0,0)

• algebra 1 -

mmmmhhh?
Isn't the second equation the same as the first?

And how many points would satisfy the first?

So what do you think?

• algebra 1 -

ohhhh so just one solution right?

• algebra 1 -

If you mean infinite not indinetly than the answer is C.
2x-y-1=0 subtract 2x from each side
-y-1 = -2x + 0 add 1 to each side
-y = -2x + 1 multiply everything by -1
y = 2x-1
The equations are equal, so the system has infinite solutions.

• algebra 1 -

oh ok thanks alot

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