Can anyone help me with this. I thought B but it’s C. Also would appreciate some interpretation of what’s happening. Here’s my train of thought

x?y= - |x+y| so the negative of the absolute values of x + y

3?(-4) = - |3+4| = -7

What am I doing wrong? The absolute value of -4 = 4 right?

We should not be taking the absolute value of -4.

In Quantity A, if we compare it with the above function, we have **x = 3 and y = - 4**

On plugging these into the right side of the given function, we get

**- |3 + (- 4)|**

So that’s

→ - |3 - 4|

→ - |- 1|

→ **-1**

Quantity B is also 3 - 4 = **-1**

Hence, C

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THANKS!

Two more questions

- So in words the function says: take the negative of the absolute value of the sum of x + y, correct?
- In the last two steps it says - |-1| so that means the negative of the absolute value of -1. Abs value of -1 = 1 but then negated again because the minus sign outside the brackets. Correct?

Thanks for this

Yep, that’s absolutely right!