Answer:
Answer is: A(Linear)
Step-by-step explanation:
A linear function is a function whose graph is a straight line.
It is given that Mary plotted a graph and she found out that the difference in the y values is the same. So such a thing could happen when a function is a linear function.
since, a linear equation is given as:
where a and b are real numbers.
so for distinct values of x say
we get the y-values as 
now,

so for equally spaced
we get the difference in y-value to be equal.
Hence, the function is Linear.
Answer:
both or neither as they are the same distance to rescue her
total distance is her 13 plus 12 headed west and 5 headed south so 30
Step-by-step explanation:
Answer:
It doesn't matter that much
Step-by-step explanation:
I know it from last year
Do you still need the answer, because im working on the same question..
Answer:
C. 5x
Step-by-step explanation: