12/4 review

What is the solution?

• (6, 3)
• (3, 6)
• (-6, 3)
• No solution

Solve the following system by graphing.  What is the solution?

• (-4, 2)
• (4, 2)
• (2, -4)
• (2, 4)

Solve the following system by substitution.  What is the solution?

• (1, -2)
• (-2, 1)
• (-4, 1)
• (2, 1)

Solve the system using any method. 
−4x − 4y = 0
4x + 4y = 0 

• (−6, −4) 
• Infinite number of solutions  
• No solutions
• (6, 4) 

Solve for x and y using any method we've learned!
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)

Solve the system of equations below:
9x - 4y = 1
-3x + 8y = -47

• (3, -7)
• (-3, 7)
• (-3, -7)
• (-7, -3)

Solve by elimination:
4x+9y=28
-4x-y=-28

• (-7,0)
• (6,0)
• (-6,0)
• (7,0)

What does the x represent in this situation?
Manny’s Music Rental charges a fee of $40 plus $25 per month to rent a saxophone. Sid’s Saxophones charges $25 plus $30 per month to rent the same saxophone.
y = 25x + 40
y = 30x + 25

• price of a saxophone
• rental fee
• total cost
• number of months

The solution of a system of linear equations is...

• the y-intercept (b)
• the intersection of the two equations on a graph
• the second equations' answers
• the slope (m)

What is the solution?

• One Solution
• No solution
• Infinitely Many Solutions
• (0, -1.5)