Topic 4 Quiz (4B)

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

• Intersecting lines
• Same line
• Parallel lines

What is the solution to the system of equations?

• (-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)

Price of Senior Citizen Ticket: ​ (a)  

Price of Student Ticket: ​ (b)  

• $3
• $11
• $2
• $10
• $6
• $14
• $5
• $9

Solve by elimination:
4x+4y=4

3x+4y=10

• (7,-6)
• (-6,7)
• (6,7)
• (7,6)

A system of two parallel lines will have how many solutions?

• One Solution
• Two Solutions
• No Solution
• Infinite Solutions

Solve by elimination 
2x+9y= -7 
6x-3y= 9 

• (-1, -1) 
• (2,-1)
• (1,1)
• (1,-1)

Homer sells tickets for admission to your school play and collects a total of $104. Admission prices are $6 for adults and $4 for children. He sold 21 tickets total. Solve the system:
x + y = 21
6x + 4y = 104

• (10, 11)
• (12, 9)
• (11, 10)
• (9, 12)

Erin is 3 years younger than twice Alex's age. Their ages combined are 33 years. How old are Alex and Erin. If x=Erin's age and y=Alex's age, choose the system that matches the situation.

• x + y = 33
  y = 2x - 3
• x + y = 33
  x = 2y - 3
• x + y = 33
  x = 3 - 2y
• x + y = 3
  x = 33 - 2y

Match the following symbol with how you would graph the inequality.

• Dotted Line Shaded Above

• ≤

• Solid Line Shaded Below

• <

• Dotted Line Shaded Below

• >

• Solid Line Shaded Above

• ≥