Systems of Equations (Review)

Give the solution to the system

• (3,1)
• (1,3)
• (-1,3)
• a hoppy hippo

Find the solution to the system
x − y = 3
7x − y = −3

• (4,1)
• (-1,-4)
• (-1,-1)
• vanilla

Caitlin won a bag full of money! She has 49 bills in all. She counts $1430. There are twenty dollar bills and fifty dollar bills.  How many of each bill does Caitlin have?WRITE a SYSTEM.

• T + F = 1430
  20T + 50F = 49
• t+ f = 49
  10t + 5f = 1430 
• t + f = 49
  20t + 50f  = 1430
• T + F = 49
  T + F = 1430

The system pictured is:

• y > -2 + x
  y ≤ 2x + 2
• y > 2 + x
  y ≤ 2x + 2
• y ≥ -2 + x
  y ≤ 2x + 2
• none of these are the system

A passenger jet took three hours to fly 1800 miles in the direction of the jetstream. The return trip against the jetstream took four hours. What was the jet's speed in still air and the jetstream's speed?

• speed = 500 mi / hour
  jet stream = 100 mi/ hour
• speed = 475 mi/hour
  jet stream = 25 mi/hour
• speed = 525 mi/hour
  jet stream = 75 mi/hour
• jet stream = 1,000,0000 mi/hour
  speed = 2 mi/hour

Find the solution to the system
4x – 3y = 5
y = 2x – 3 

• (2,1)
• (1,2)
• (2,2)
• the answer is not listed

Match: the overlap is on the left!

• y ≤ 3x   and  y ≤ -2x + 4
• y > 3x   and  y > -2x + 4
• y < 3x   and  y > -2x + 4
• y > 3x   and  y < -2x + 4

• (2, -11)
• (2, 11)
• (-2, -11)
• (11, -2)

• (2, 4)
• (4, -2)
• (-2, 4)
• No Solution

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