Question

If - 4 ≤ x ≤2 and 5 ≤ y ≤ 12, what
is the largest possible value of (y - x)?

Answer 1

16

Explanation:

Since x is negative, lets instead thing of the problem as

y + (-x)

and find the bounds of -x to be

`- 2 < = - x < = 4`

now, the max value of y is 12 and the max value of -x is 4

12 + 4 = 16