Algebra 1 7.2 & 7.3 Quiz Review

When does a system of equations have no solutions?

• When the lines cross
• When slopes of the lines are different
• When the slopes are the same
• There is ALWAYS a solution sir!

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.10

Which method would be best (quickest) for solving the system below:

x + y = 11

3x - 4y = -2

• Substitution

• Elimination

• Graphing

• None of the above

Which method would be best (quickest) for solving the system below:

x + y = 19

y = 3x - 1

• Substitution

• Elimination

• Graphing

• None of the above

Solve for x and y.
2x − 3y = −1
 y = x − 1

• (-2,-3)
• (0,-1)
• (3,4)
• (4,3)

Tags

CCSS.HSA.REI.C.6

Solve the system of equations:
−6x + 6y = 0
9x − 8y = 4 

• (4, −9)
  
• Infinite number of solutions 
• (−9, 4)
  
• (4, 4) 

Tags

CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

Solve the system of equations:
-12x-4y= -8 
  6x+2y= 4

• no solution 
• (0,0)
• infinitely many solutions 
• (4,0)

Tags

CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

Solve the system of equations:
y=5x+3
y=-2x-4

• (2,-1)
• (-1,-2)
• (1,-2)
• (-2,-1)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

Solve the system of equations:
y = 8x + 2
y = -x - 7

• (1, 10)
• (-1, -6)
• (2, 7)
• (9, 9)

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11

Solve the system of equations:
4x+8y=20
-4x+2y=-30

• (-7,1)
• (2,-5)
• (-2,5)
• (7,-1)

Tags

CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

Solve the system of equations:
3x + 2y = 16
14x + 2y = 38

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Tags

CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

CCSS.HSA.REI.D.11