Answer: c
This system has infinitely many solutions.
Step-by-step explanation:
Solve by substitution:
1) Solve [tex]y=2x-1[/tex] for [tex]y[/tex]:
[tex]y=2x-1[/tex]
2) Substitute [tex]2x-1[/tex] for [tex]y[/tex] in [tex]2x-y-1=0[/tex]:
[tex]2x-y-1=0[/tex]
[tex]2x-(2x-1)-1=0[/tex]
3) Simplify both sides of the equation:
[tex]0=0[/tex]
Therefore, This system has infinitely many solutions.
Solve by elimination:
You can't solve this system of equations by elimination.
Solve by graphing:
The lines are directly on top of each other, Therefore there are infinitely many solutions.
