Answer:

Step-by-step explanation:
This problem can be solved using the pythagorian theoreme:

Where:



We isolate our incognita an we get:

We supplant with the given data:





Answer:
169
Step-by-step explanation:
125+263=388
388-557+169
Answer:
Step-by-step explanation:
y + 5 = 1(x - 7)
y + 5 = x - 7
y = x - 12
Answer:
All x-coordinates are different, so this relation is a function.
Having the same y value more than once is not a problem for a function.
"This (does not/does) represents a function because different (x values/y values) can have the same (x values/y values)."