Which of the following is a correct interpretation of the expression −2−7?Choose 1 answer:(A) Start at −2 on the number line and move 7 to the left.(B) Start at −2 on the number line and move 7 to the right.(C) Start at 7 on the number line and move 2 to the left.(D) Start at 7 on the number line and move 2 to the right.
Q. Which of the following is a correct interpretation of the expression −2−7?Choose 1 answer:(A) Start at −2 on the number line and move 7 to the left.(B) Start at −2 on the number line and move 7 to the right.(C) Start at 7 on the number line and move 2 to the left.(D) Start at 7 on the number line and move 2 to the right.
Understand Subtraction: To interpret the expression −2−7, we need to understand that subtraction can be seen as moving to the left on the number line. The expression indicates starting at −2 and then moving 7 units more in the negative direction.
Move Left on Number Line: Since we are moving in the negative direction (to the left on the number line), we are adding more negative value to our starting point of −2. This means we are going further left from −2 by 7 units.
Perform Calculation: Performing the calculation, −2−7 equals −9. This confirms that we have moved 7 units to the left from −2, ending up at −9 on the number line.
Correct Interpretation: The correct interpretation of the expression −2−7 is therefore: Start at −2 on the number line and move 7 to the left, which corresponds to choice (A).