What is the solution for this? Can someone explain it? I did not get it after watching the video.
Pick some value x on a number line and ask yourself how many points exists on the number line such that it’s y units away from x.
For instance, if i choose x = 5 then there are 2 points that are 2 units (we let y = 2 here) away from 5, namely: 3 and 7.
Ask yourself if this is always the case and then choose an answer.