Algebra Practice Test

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What is the result of evaluating x + y for x = -8 and y = -15?

-7
-23
-8
7

The correct answer is: -23

To find the result of evaluating the expression x + y with the values x = -8 and y = -15, you simply add the two values together. First, take the value of x, which is -8. Then, add the value of y, which is -15, to it: -8 + (-15) When you add two negative numbers, you combine their absolute values and keep the negative sign. The absolute values of -8 and -15 are 8 and 15, respectively. Calculating the sum of the absolute values: 8 + 15 = 23 Since both numbers are negative, the result is -23. Therefore, the evaluation of x + y when x = -8 and y = -15 gives you -23, confirming that the result is accurate.