CRM S2 Final Exam Review

The system of equations y = -3x + 5 and y = -3x - 7 has

• exactly one solution.

• no solution.

• infinitely many solutions.

• exactly two solutions.

Choose the correct description of this system of equations

2x - y = 4

4x - 2y = 6

• consistent and independent

• consistent and dependent

• inconsistent

• inconsistent and dependent

Choose the correct description of the system of equations

9x - 3y = 15

6x = 2y + 10

• consistent and independent

• consistent and dependent

• inconsistent

• inconsistent and dependent

To solve the system of equations, which expression could be substituted for y into the first equation?

5x + 3y = 9

4x + y = 8

• 12x - 3y

• 4x - 8

• 8 - 4x

To solve the system of equations, which expression could be substituted for y into the first equation?

3x + 6y = 12

2x - y = 5

The first equation of the system is multiplied by 3. By what number would you multiply the second equation to eliminate the x variable by adding?

• -2

• 2

• 9

• -9

The first equation of the system is multiplied by 2. By what number would you multiply the second equation to eliminate the y variable by adding?

• -2

• -1

• 6

• -3

Solve the system of equations.

5x + 2y = 1

y = 1 - 3x

• (1, -2)

• (1, 2)

• (-2, 1)

Solve the system of equations

3x + 4y = 12

2x - 3y = -9

• (3, 0)

• (4, 0)

• (-1, 4)

• (0, 3)

Which systems of equations is graphed?

• x + y = 5

  x - 2y = 2

• x + y = 5

  x + 2y = 2

• x - y = 5

  x - 2y = 2

• x - y = 5

  x + 2y = 2