Solving Linear Equations Using Properties of Equality

Solving Linear Equations Using Properties of Equality

(Elizabeth Borres)

At the end of the lesson, student will be able to:

1. Apply properties of equalities in solving linear equations.

2. Solve Linear Equations.

Multiple Choice

Name the property illustrated by the statement.

a – 2.03 = a – 2.03

• Reflexive

• Symmetric

• Transitive

• Substitution

Multiple Choice

Name the property illustrated by the statement.

If 9 = x, then x = 9.

• Reflexive

• Symmetric

• Transitive

• Substitution

Multiple Choice

What property is illustrated by the statement?

If 3 = x and x = y, then 3 = y.

• Reflexive

• Symmetric

• Transitive

• Substitution

Poll

Do you have any questions?

Open Ended

Solve m – 5.48 = 0.02.

What is the first step in solving this equation?

Open Ended

Solve

 $18\ =\ \frac{1}{2}t$  . Give the first step.

Open Ended

Before I move to the next slide, is there any clarification?

Multiple Choice

19 + a = -50

• a = -950

• a = -69

• a = -31

• a = -50/19

Multiple Choice

What is the solution to the equation

 $\frac{2}{3}x=10?$  

• 5

•  $\frac{20}{3}$  

• 15

• 30

Solve for a Variable

GEOMETRY: The formula for the surface area S of a cone is

 $S\ =\ \pi rl\ +\ \pi r^2,$  

where l is the slant height of the cone and r is the radius of the base. Solve the formula for l.

GEOMETRY:

The formula for the perimeter of a rectangle is

 $P\ =\ 2l\ +\ 2w$  , 

where P is the perimeter, l is the length, and w is the width of the rectangle. 

What is this formula solved for w?

Multiple Choice

 $If\ 2x+\ 6\ =\ -3,\ what\ is\ the\ value\ of\ 2x\ -\ 3?$ 

• 12

• 6

• -6

• -12

Poll

Let me know what you think.

• I need few more examples.

• I understand the lesson.

• I want to attend to small group for a tutorial.

• I understand and I am ready for the work.