Question

what is the length of $overline{ca}$ on the number line?
a -5
b -1
c 4
d 9

Explanation:

Step1: Identify coordinates of points

Point $C$ is at $4$, Point $A$ is at $-5$.

Step2: Calculate distance (absolute difference)

Length = $|4 - (-5)| = |4 + 5|$

Step3: Compute final value

$|9| = 9$

Answer:

D. 9