Question

What is the 'y' length of a vector with a beginning point of (1, -2) and an end point of (-3, 4)

Answer 1

6

Explanation:

y length of the vector is nothing but the absolute difference of the y coordinates of the point

We have y1 = -2 and y2 = 4

So y-length = |4 - (-2)| = |4 + 2| = 6

We have to take the absolute value since length is always a positive value

If we had taken y1 - y2 as the length we would have got -2 - 4= - 6 which is an absurd value for length. But taking the the abs value makes it |-6| = 6