5.2b Basic Substitution for system of equations

Presentation

•

Mathematics

•

7th - 9th Grade

•

Practice Problem

•

Hard

•

CCSS

8.EE.C.8B, HSA.REI.C.6

Standards-aligned

Steve Ramp

Used 45+ times

FREE Resource

3 Slides • 7 Questions

5.2b Basic Substitution for system of equations

Substitution means to replace a variable with something that is equal to it.

3x + 2y = 2
y = 4
Replace the "y" in the first equation with 4
3x + 2(4) =2
Now solve for x: 3x + 8 = 2
3x = -6
x = -2

Multiple Choice

Solve for 'x' if y = -2

4x - 5y = 22

x = 8

x = -8

x = -3

x = 3

Multiple Choice

Find "y" if x = -4 in the equation below.

2x - 6y = 4

y = -2

y = 2

y = 4

y = -4

Multiple Choice

Solve for "x" and "y" if y = 2x in the equation below:

-4x + 5y = -12

(2, 4)

(-2, 4)

(2, -4)

(-2, -4)

Solving a system by basic substitution is done the same way.

Given two equations:
3x - 4y = 6
and y = -3
Subititute the value of y into the first equation
3x - 4(-3) = 6 and solve for x
Express the answer in an ordered pair: (-2, -3)

Multiple Choice

Solve the following system of equations by substitution:

3x - y = -7

y = -2

(3, -2)

(-3. -2)

(-2, 3)

-2, -3)

Multiple Choice

Solve the following system by substitution:

-5x - 4y = 6

x = 2

(2, -4)

(2, 4)

(-4, 2)

4, 2)

Multiple Choice

Solve the following system by substitution:

-7x - 3y = 4

y = -2x

(4, 8)

(4, -8)

(-4, 8)

(-4, -8)

Multiple Choice

Solve the following system by substitution:

-4x + 9y = -6

x = 3y

(6, 2)

(6, -2)

(-6, 2)

(-6, -2)

5.2b Basic Substitution for system of equations

Show answer

Auto Play

Slide 1 / 10

SLIDE

Similar Resources on Wayground

9 questions

Slope from Two Points

Presentation

•

8th Grade

6 questions

Writing two step equations

Presentation

•

6th - 8th Grade

10 questions

T1 S1 (numeros enteros)

Presentation

•

7th - 9th Grade

10 questions

parallel lines cut by transversal

Presentation

•

8th - 10th Grade

10 questions

Transformations

Presentation

•

8th Grade

7 questions

5-4 Point-Slope Form

Presentation

•

7th - 9th Grade

6 questions

penambahan anak tk

Presentation

•

11 questions

Exponent Rules

Presentation

•

7th - 9th Grade

Popular Resources on Wayground

10 questions

Safety Day 2026 – Student Review

Quiz

•

9th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

12 questions

Map Skills

Quiz

•

3rd Grade

22 questions

Continents and Oceans

Quiz

•

5th Grade

15 questions

Rounding Decimals

Quiz

•

5th Grade

Discover more resources for Mathematics

20 questions

Rational and Irrational Numbers

Quiz

•

8th Grade

16 questions

Proportional and Non Proportional Relationships in Tables, Graphs, and Equations

Quiz

•

7th Grade

20 questions

Constant of Proportionality

Quiz

•

7th Grade

20 questions

Halloween Trivia

Quiz

•

7th Grade

15 questions

One-Step Equations

Quiz

•

7th Grade

20 questions

Add and Subtract Integers

Quiz

•

6th - 8th Grade

16 questions

Adding and Subtracting Integers

Quiz

•

7th Grade

20 questions

Slope from a Graph

Quiz

•

8th Grade