The X coordinates are the bottom part of a graph and Y coordinates are at the up & down part of a graph. Hopefully that answers your question.
Answer:
3:10pm
Step-by-step explanation:
1:30 + 20 = 1:50pm
1:50 + 55 = 2:45pm
2:45 + 25 = 3:10pm
Just isolate y! Since the slope-point formula is y = mx + b, looking at your m determines if it's negative or positive! You can always graph the equation to check, but it's usually easier to look at the formula.

the -7 is found there twice, so it has a multiplicity of 2
the +7 is there thrice, so it has multiplicity of 3
The correct answer would be 3. f(x) = -1, so you got to find the -1 in the y row of the table and just say that x =3 if y =-1.