2-3 Equivalent Equations Lesson Slides: 2 Slides (9th Grade)

2 Slides • 11 Questions

1

Multiple Choice

Solve for x.

$2x-4=20$

1

$x=22$

2

$x=12$

3

$x=8$

4

$x=32$

2

Multiple Choice

Solve for x.

$2\left(x-2\right)=20$

1

$x=22$

2

$x=12$

3

$x=8$

4

$x=32$

3

Poll

What genre of movies is the best?

Horror

Comedy

Romantic Comedies

Action

4

like term: terms whose variables and exponents are the same

In English: the term must have same letters and same exponents on those letters. ex. 5x⁴ and -3x⁴

Like Terms

term: a single mathematical expression

In English: anything separated by a plus(+) or minus(-)

Term

Terms and Like Terms

Some text here about the topic of discussion

5

Match

Match the following like terms

5x⁴

-4

2y²

20x

-3x⁴

3

3y²

-5x

6

Multiple Choice

What term did I move to get from

$5x-4=-3x+20$

to $5x=-3x+24$

1

5x

2

-4

3

-3x

4

20

7

Equivalent Equations

What is an equivalent equation?

An equivalent equation is an equation equal in value to another equation.
Today we will learn how to identify equivalent functions by simplifying using combining like terms, distributive property and balanced moves.

8

Multiple Choice

Which of the following equations is not equivalent to:

$3x+6=4x+7$

1

$3x=4x+1$

2

$6=7x+7$

3

$3x-1=4x$

9

Multiple Choice

Which of the following equations is not equivalent to:

$3\left(x+6\right)=24$

1

$x+6=21$

2

$3x+18=24$

3

$x+6=8$

10

Poll

What will be the first step to solve this equation?

$3x+6=4x+7$

To identify the largest x term and move the all x terms to that side?

(subtract 3x from both sides)

To move the 6.

(subtract 6 from both sides)

To move the 6.

(add 6 to both sides)

11

Multiple Choice

We know have $6=x+7$

Solve for x.

1

$1=x$

2

$13=x$

3

$-13=x$

4

$-1=x$

12

Draw

Draw the best car in 2 minutes.

13

Multiple Choice

Exit Ticket: Combine all like terms to identify the equivalent expression.

$3x^2+5x-3x+2x^2+5-7$

1

$7x-2$

2

$5x^2+8x+12$

3

$5x^2+2x-2$

Solve for x.

$2x-4=20$

1

$x=22$

2

$x=12$

3

$x=8$

4

$x=32$

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MULTIPLE CHOICE

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