Answer
$d(A, E) = 6$
Work Step by Step
$d(A, E)$ represents the distance between the points A and E on a number line.
If the coordinates of A and E are $a$ and $e$, respectively, then:
$d(A, E) = |a-e|$
Based on the given number line, the coordinates of A and E are $-3$ and $3$, respectively.
Use the formula above to obtain:
$d(A, E) = |-3-3| = |-3+(-3)| =|-6|=6$
Thus,
$d(A, E) = 6$
