Question

Solve:

Answer 1

Answer: c

This system has infinitely many solutions.

Step-by-step explanation:

Solve by substitution:

1) Solve $y=2x-1$ for $y$:

$y=2x-1$

2) Substitute $2x-1$ for $y$ in $2x-y-1=0$:

$2x-y-1=0$

$2x-(2x-1)-1=0$

3) Simplify both sides of the equation:

$0=0$

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.