Unit 6 Quiz #1

Which point is a solution?

• (0, 6)

• (-3, 5)

• (1, 0)

• (-4, 3)

Match

• y < x−2 
  y < 3
• y > -x+2
  y > 3
• y < -x+2
  y < 3
• y < -x+2
  y > 3

Josh is thinking of two numbers.  Their sum is -10 and their difference is -2.  Which system of equations represents the situation?

• x - y = -10
  x + y = -2
• x = -2 
  y = 5
• x + y = -2
  x - y = -10
• x + y = -10
  x - y = -2

Nancy went to the grocery story.  On Monday she purchased 4 apples and 6 bananas for a total of $13.  On Wednesday she purchased 3 apples and 7 bananas for a total of $13.50.  Which system of equations represents the situation?

• 4x + 6y = 3
  13.5x - 13y = 6
• x + y = 4
  x - y = 6
• 4x + 6y = 13
  3x + 7y = 13.5
• 4x - 6y = 13
  3x - 7y = 13.5

When you graph the exact same equation twice,

• you will have no solution. 
• you will have one solution.
• you will have infinite solutions. 
• you will graph a giraffe. 

Solve the System Using any Method

(You Must Show Your Work On Your Paper For This Problem)

x = -3y - 17

2x + 3y = -7

• (1, -20)

• (10, 0)

• (-5, -2)

• (10 , -9)

Match the graphs to their solutions

• (-1, -1)

• 
• (4, -3)

• 
• (2, -1)

• 
• (3, -2)

• 

Examine the student work shown. What mistake did the student make in using substitution to solve the system of equations?

• They isolated the variable incorrectly

• They distributed incorrectly

• They combined like terms incorrectly

• They used opposite operations incorrectly

What is the solution to the system of equations?

(You Must Show Your Work On Your Paper For This Problem)

3x + 6y = 12

3x – 6y = 0

• (1, 2)

• (2, 1)

• (3, 6)

• (6, 3)

Solve for x and y

(You Must Show Your Work On Your Paper For This Problem)

3x + 2y = 16

7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)