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5 votes
5 votes
Which number line best shows how to solve −4 − (−6)?

Which number line best shows how to solve −4 − (−6)?-example-1
User Frnsys
by
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1 Answer

8 votes
8 votes

Answer:

D

Explanation:

You want to find the number line that shows the solution to -4 -(-6).

Number line operations

The first number in the "sum" is -4, so the first arrow on the number line should go from 0 to -4. (All choices show that.)

The second number is -6. Addition of -6 would create an arrow from -4 going 6 units to the left. Subtraction works in the opposite direction, so the subtraction of -6 will show as an arrow from -4 extending 6 units to the right. Only answer choice D shows this.

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Additional comment

You know the solution is -4 -(-6) = -4 +6 = +2, so the graph showing the solution will have an arrow ending at +2. This eliminates all answer choices except the correct one.

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Which number line best shows how to solve −4 − (−6)?-example-1
User Adam Coster
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3.4k points