Solving systems by substitution method 4.1

Solve each system of equations.
y = 3x - 11  
2x + 3y = 0

• (-2,3)
• (-3,2)
• (3,-2)
• (2,-3)

What is the solution to this system of equations?

• (4, -1)
• (-1, 4)
• (-4, 1)
• (-4, -1)

The first step in solving using the substitution method is __________.

• get x by itself
• get y by itself
• get either variable by itself
• add the equations together

What is the solution to the system of equations? 
y = 3x - 8
y = 4 - x

• (3,1)
• (1,3)
• (-3,1)
• (3,-1)

If a system of equations has no solution, what does the graph look like? 

• intersecting lines
• parallel lines
• skew lines
• intersecting lines

How many solutions?

• One Solution
• No solution
• Infinitely Many Solutions

Quick Review:

How many solutions does the graph have?

• One solution

• No solution

• Infinite solutions