# 1. Is -7 + 9 = -9 + 7 true, false, or open? a. true. b. false. c. open 2. Is 4x - 3 = 19 ...

## Question:

1. Is {eq}-7 + 9 = -9 + 7 {/eq} true, false, or open?

a. true.

b. false.

c. open

2. Is {eq}4x - 3 = 19 {/eq} true, false, or open?

a. true.

b. false.

c. open.

3. Which of the following is a solution to the equation {eq}16 = 4x - 4 {/eq}?

a. -5

b. -4

c. 5

d. 16

## Linear Equation with One Variable:

Linear equation with one variable gives the relationship between the unknown variable, constants, and operations they undergo. It can easily be solved by applying simple arithmetic operations to find the value of the variable.

For example, {eq}12x - 392=0 {/eq} is an ecample of linear equation with one variable.

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1. Is {eq}-7 + 9 = -9 + 7 {/eq} true, false, or open?

a. true.

b. false.

c. open

$$-7 + 9 = -9 + 7$$

$$2\ne -2$$

What is a Linear Equation?

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Chapter 1 / Lesson 3
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Most cars won't be able to run for more than 250,000 miles, so how much longer will your car live? Linear Equations are the most basic kind of algebraic function and can help you answer questions exactly like this. Learn about what they look like, how they come up in your life and why they are powerful tools.