Substitution Method

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

• (-3, -25)

• (3,-7)

• (11, 17)

• (21, 47)

Solve using substitution.
x - 2y = 2
3x + 4y = 3

• (1.4, -0.3)

• (3.1, 5)

• (-2.5, 3.5)

• (6.9, 1.02)

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

• (3,1)

• (1,3)

• (-3,1)

• (3,-1)

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)

Read each step of the Substitution method for solving a System of Equations. Then, match the result of performing the step with the step.

• 2(2) + y = 5

  y = 1

• Step 1: Solve one equation's variable (expression)

• -3x + 6(5-2x) = 0

• Step 2: Substitute the expression in the other equation

• y = 5 - 2x

• Step 3: Solve the equation for a value

• (2, 1)

• Step 5: Present the solution as an ordered pair

• x = 2

• Step 4: Substitute the variable's value in the other equation; solve

Tags

CCSS.MATH.CONTENT.HSA.REI.C.6

CCSS.MATH.CONTENT.HSA.CED.A.3

Solve the system by using the substitution method

Solve the system of equations using the substitution method

Solve the system using the substitution method:

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

• y=3

• y=1

• y= - 2

• y=4

Solve the system of equations using substitution:
-4x + 4y = 8
y = -2x - 10

• (-4, -2)

• (12, -34)

• (4, -18)

• (-2, -6)