SOE Solve by Substitution Method

Which choices represent the first step in solving a system of equations by Substitution Method?

• Get one of the variables alone

• Only get y alone

• Solve for one of the variables

• Use inverse operations to isolate one of the variables

Which expression would be substituted in for y in the bottom equation?

y = -6

-3x - 6y = 24

Given the system,

x - 2y = 2

3x + 4y = 3

Which variable is easiest to solve for?

• x in the bottom equation

• x in the top equation

• y in the top equation

• y in the bottom equation

TRUE or FALSE

Given the system,

y = -4x +5

y = 3x - 16

To solve, you would just set the expressions equal to each other and solve for x

Solve the following equation for x

-4x + 4y = 8

• x = 2y + 4

• x = -4y + 8

• x = y - 2

Solve the following system by Substitution Method

y = -6

-3x - 6y = 24

• x = 4

• y = -6

• (4, - 6)

• (-4, -6)

Solve the system of equations by using Substitution Method

y = 3x -8

y = 4 - x

• (1, 3)

• ( 3, 1)

• (-1, -3)

• (-3, 1)

Solve the following system by using Substitution Method

-4x + 4y = 8

y = -2x -10

The solution is _____________