10/28 Solving Systems by Substitution

Solve the system by substitution.

y = 3x - 8

y = 4 - x

• (3,1)

• (1,3)

• (3,-1)

• (3,-1)

Solve the system by substitution.

y = -5x

x + 3y = 28

• (-6, 30)

• (-2, 10)

• (-2, 39)

• No solution

• Infinite solutions

Solve the system by substitution.

y = 8x+1

y = 6x+3

• (1, 9)

• (4, 14)

• (0, 1)

• (1, 4)

Solve the system by substitution.

y = 2x + 1

y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Solve the system by substitution.

5x + 4y= −14

y = −7x − 15

• (-2, -1)

• (1, -2)

• (-2, 1)

• (-1, -2)

Solve the system by substitution.

 $y=6x-11$  

 $-2x-3y=-7$  

•  $\left(2,\ 1\right)$  

•  $\left(1,\ 3\right)$  

•  $\left(2,\ 5\right)$  

•  $\left(3,\ 2\right)$  

Solve the system by substitution.

 $y=-3x+5$  

 $5x-4y=-3$  

•  $\left(1,\ 2\right)$  

•  $\left(1,\ 5\right)$  

•  $\left(2,\ 5\right)$  

•  $\left(5,\ 1\right)$  

Solve the system by substitution.

 $2x-y=-1$  

 $y=x-1$  

•  $\left(-2,-3\right)$  

•  $\left(4,\ 5\right)$  

•  $\left(5,\ 3\right)$  

•  $\left(3,\ 4\right)$  

Solve the system by substitution.

 $y=5x-7$  

 $-3x-2y=-12$  

•  $\left(2,\ 3\right)$  

•  $\left(3,\ 2\right)$  

•  $\left(-2,\ -3\right)$  

•  $\left(-2,\ 3\right)$  

Solve the system by substitution.

 $y=4x+6$  

 $-5x-y=21$  

•  $\left(-3,\ -6\right)$  

•  $\left(3,\ 6\right)$  

•  $\left(3,\ -6\right)$  

•  $\left(-3,\ 6\right)$