Systems 5/23

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

If a system of equations has no solution, what does the graph look like? 

• intersecting lines
• parallel lines
• skew lines
• intersecting lines

Which of the following is not a method to solve systems?

• Elimination
• Difference of Squares
• Substitution
• Graphing

Solve the following system
x + 9y = 8
-6x - 9y = -3

• (1,-1)
• (1,1)
• (-1,1)
• (-1,-1)

Match the following graphs to the systems of equations

• 
• 
• 

The coefficients of the eliminated variable must be _____.

• the same number opposite signs (opposites)

• exactly the same

• completely different

• doesn't matter

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

Is (-3, -7) a solution the system:

y = 4x + 5

y = x – 4

• YES

• NO

What is the first step Terri could take to find the solution to the system of equations using the Elimination Method?

• Multiply by -1 through one equation to flip the signs and create opposite y-values.

• Multiply by -1 through one equation to flip the signs and create opposite x-values.

• Multiply by 1 through one equation to flip the signs and create opposite y-values.

• Isolate a variable and substitute the value in the other equation.

To find the solution to the system of equations Tandy looked for opposites to zero each other out. What variable contains opposite coefficients and which method is Tandy using?

• The x-variables are opposites, and Tandy is using Elimination.

• The x-variables are opposites, and Tandy is using Substitution.

• The y-variables are opposites, and Tandy is using Elimination.

• The y-variables are opposites, and Tandy is using Substitution.