From what I know this graph looks like that of a modulus function except it's shifted 1 unit to right and 1 unit below the origin.
So the original equation must be:
y = |x|
And the transformed equation (aka the equation if this graph) must be,
y+1 = |x| -1
y = |x| -2
First one is 4/ 52 and the second second one is 4/51. (I did not reduce).
Answer:
3.85666667 minutes of 260sec
It’s 251 divided by 2 equals 5