Systems Elimination Strategy

What would be the first step to solve this system by elimination?

• Add the equations

• Subtract the equations

• Write each equation in slope intercept form.

• Multiple the first equation by 3 or -3

If a system of linear equations has infinitely many solutions, what does this mean about the two lines? 

• Intersecting lines

• Same line

• Parallel lines

________________

are two or more equations that have the same variables and work together.

• graphing lines

• elimination method

• system of equations

• table

Which strategy is the best choice for solving this system?

• Elimination

• Elimination with multiplication

• Substitution

• Graphing

Which strategy is the best choice for solving this system?

4x − 4y = 10

4x + 8y = 0

• Elimination

• Elimination with multiplication

• Substitution

• Graphing

Solve the following system. Which statement is true?

• y = -1

• x = -2

• x = 1

• y = -2

Solve the following system. What is the solution?

• (3, -1)

• (-1, -3)

• (-1, -1)

• (-1, 3)

Your family goes to a restaurant for dinner. There are 6 people in your family. Some order the chicken dinner for $14.80, and some order steak for $17. If the total bill was $91, which system best represents the situation? 

• x + y = 6
  14.80x + 17y = 91

• x + y = 91
  14.80x + 17y = 6

• x + y = 6
  14.80y + 17x = 91

• x + y = 91
  14.80x+ 17y = 6

Which strategy is the best choice for solving this system?

• Elimination

• Elimination with multiplication

• Substitution

• Graphing

What is a true statement?

• x = 2

• y = 2

• x = 5

• y = -5