Systems Substitution

If x = 4.6 what does y equal?

x = 7 + y

y = 7 - 2x

• y = -2.2

• y = 4.4

• y = 0.4

• y = -16.2

Solve using substitution.

• (5, 4)

• (4, 5)

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Solve the system of equations.
y = 4x+1
3x + 2y = 13

• (1, 5)

• (5, 1)

• (0.25, 2)

• ∅

What is the solution to this system?

• One Solution

• No solution

• Infinitely Many Solutions

- 3x + y = -8
  x + y  = 4

• (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

Solve for x and y.
3x+y=-5
6x+2y=10

• No Solution

• Infinite Number of Solutions

• (2,3)

• (6,-2)

What is the solution?

• No solution

• (0, 2)

• (0, -4)

• (3, -3)

Give the solution to the system.

• (3,1)

• (1,3)

• (-1,3)

• (1, -3)