Solution Substitution

The solution (x, y) to a system of equations is the point where they...? 

• Run off the graph
• Don't touch
• Intersect
• Exist

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

• (3,1)
• (1,3)
• (-3,1)
• (3,-1)

y = -6
-3x - 6y = 24

• (6, 6)
• (6, -6)
• (4, -6)
• (-6, 4)

Solve the system of equations by substitution.
y = -4x + 5
y =  3x - 16

• (-3, -25)
• (3,-7)
• (11, 17)
• (21, 47)

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (0, 1)

This system has _____ solutions

• 0
• 1
• 2
• Infinitely many

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (0, 1)

What is the solution?

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

solve by substitution: y=3x+14
y=-4x

• y=3
• y=1
• y= - 2
• y=4

Solve for x and y using any method we've learned!
y = 2x + 1
y = 4x - 1

• (1,3)
• (-1,-3)
• (-1,3)
• (3,1)