Solving Systems of Equations with Elimination Multiplying by Negative One

What is the best method for solving this system of linear equations?

• Graphing

• Substitution

• Elimination

What is the best first step to solve this system by elimination?

• Add the equations to eliminate y

• Subtract the equations to eliminate y

• Multiply the second equation by 3.

• Multiply the first equation by 2

What is the best first step to solve this system by elimination?

• Add the equations to eliminate y

• Multiply the first equation by 2

• Multiply the second equation by 2

• Add the equations to eliminate x

Which method is most efficient for solving the system of equations: 2x + 3y = 6 and 4x - y = 5?

• Trial and Error

• Graphing

• Substitution

• Elimination

What is the result when you add the equations 5x + 2y = 10 and -5x + 3y = 15?

• 5y = 25

• 5x + 5y = 25

• 5y = 5

• 5x + y = 25

The solution is:

• (4, 3)

• (3, 4)

• (-4, 3)

• No solution

What variable do you eliminate, and what do you multiply the equation(s) by?

• You eliminate x, and multiply the top equation by 11

• You eliminate y, and multiply the top equation by 7

What is the best method for solving this system of linear equations?

• Graphing

• Substitution

• Elimination

Which option shows the CORRECT substitution for this system?

Which option shows the CORRECT substitution for this system?