Algebra II Unit 4 Review

A system of linear equations is... 

• Math Magic
• One Equation
• Always more than 2 equations
• A set of 2 or more equations

Solve for x and y
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)

Tags

CCSS.HSA.REI.C.9

Solve the system of equations:
y=2x
x + y = 9

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

Solve the system of equations using substitution:
y = 4
-x + 3y =8

• (4, 4)
• (4, -4)
• (-4, 4)
• (-20, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the system?

• (3, -1)
• (2, -6)
• No Solution 
• (6, -2)

Solve the system by substitution. 
-2x - 2y = 16
y = -8

• (0, -8)
• (-8, 0)
• (-16, -8)
• (-16, -8)

What does the solution of a linear system tell you?

• The slope
• The y-intercept
• The point of intersection
• Graphing and substitution

How many solutions does the linear system have?

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

What is a solution of a linear system if the lines are the same?

• One solution

• No solutions

• Infinite solutions

How many solutions will exist to the system of equations?
y = 5x - 3
y = 5x - 3 

• One
• None
• Many 
• Two