Algebra 1 : Number Lines and Absolute Value

Study concepts, example questions & explanations for Algebra 1

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Example Questions

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Example Question #1 :Number Lines And Absolute Value

Plot the fractionon the number line.

Possible Answers:

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Question_11_incorrect_1

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Question_11_correct

Correct answer:

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Explanation:

The fractionis less thanand greater than, so it must fall between those points on the number line. Negative numbers are to the left ofwhile positive numbers are to the right.

Becauseis less than, the point must be closer tothan.

Example Question #1 :Number Lines And Absolute Value

What number or numbers have absolute value?

Possible Answers:

No such numbers exist.

Correct answer:

No such numbers exist.

Explanation:

The absolute value of every real number is nonnegative, so no number with absolute valuecan exist.

Example Question #1 :Number Lines And Absolute Value

What number or numbers have absolute value?

Possible Answers:

No such numbers exist.

Correct answer:

No such numbers exist.

Explanation:

The absolute value of every real number is nonnegative, so no number with absolute valuecan exist.

Example Question #1 :How To Find Absolute Value

What number or numbers have absolute value 29?

Possible Answers:

No such number exists.

Correct answer:

Explanation:

The absolute value of any positive number is the number itself, so 29 has 29 as an absolute value. Also, the absolute value of a negative number is its (positive) opposite, soalso has 29 as an absolute value.

Example Question #1 :Number Lines And Absolute Value

What number or numbers have absolute value 11?

Possible Answers:

No such numbers exist.

Correct answer:

Explanation:

The absolute value of any positive number is the number itself, so 11 has 11 as an absolute value. Also, the absolute value of a negative number is its (positive) opposite, soalso has 11 as an absolute value.

Example Question #1 :How To Find Absolute Value

Evaluate the expression.

Possible Answers:

Correct answer:

Explanation:

First, simplify the terms in parentheses and absolute value.

Remember that the absolute value of a negative term is positive.

Multiply and simplify.

Example Question #1 :Number Lines And Absolute Value

Solve for.

Possible Answers:

A solution does not exist.

Correct answer:

Explanation:

Divide both sides by.

Remove the absolute value brackets by setting the expression equal to both the positive and negative values of 4:

or

Example Question #1 :How To Find Absolute Value

Mr. Smith and his wife went on a trip, they travelledmiles towards their destination, however on the way there they had to turn around and drivemiles away from their destination to get Mr. Smith's wallet from the store. After getting his wallet they drovemore miles to reach their destination. What is thetotalnumber of miles that the family covered?

Possible Answers:

Not enough information.

Correct answer:

Explanation:

Even though the Smiths travelled backwards you still have to add the positive number to the equation. So it looks like this:

which equals

Example Question #8 :How To Find Absolute Value

Simplify the following equation:

Possible Answers:

Correct answer:

Explanation:

It is important to understand that the absolute value is the distance froma number is.

只是这个方程需要简化bsolute values first.

Then simplify the function

Example Question #9 :How To Find Absolute Value

Solve:

Possible Answers:

Correct answer:

Explanation:

为了解决这个绝对值,娘家姓的d to split up the absolute value in its positive and negative solution.

Break up the absolute value and rewrite the terms for the positive solution and solve for.

For the negative solution, split up the absolute value and add a negative in front of the quantity which was contained by the absolute value.

Divide by negative one on both sides.

Subtract three on both sides.

Simplify both sides.

The answers to this question are:

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