Andy ran the 100-meter dash in 13.4 seconds. Below is a table showing Andy's heart rate during the race. What parent function does Andy's data best represent?

Time (in seconds) Heart Rate
0 61.1
5 85.6
9 105.2
11 115
13.5 122.3

A. a linear function
B. a cubic function
C. a square root function
D. an absolute value function

Question

Andy ran the 100-meter dash in 13.4 seconds. Below is a table showing Andy's heart rate during the race. What parent function does Andy's data best represent?

Time (in seconds)	Heart Rate
0	                61.1
5	                85.6
9	                105.2
11	                115
13.5	                122.3
	
A.	a linear function
B.	a cubic function 
C.	a square root function
D.	an absolute value function

sonyalee77 · Answer

@jigglypuff314

jigglypuff314 · Answer

I would say that it is linear
even if it my not look like that at first.
this is because marked time is not exactly even...
going from 0 to 5  is not the same amount of time as going from  5 to 9
5 to 9 is 4 units of time
and 9 to 11 is 2 units of time
between   5 to 9  the heart rate went from 85.6 to 105.2
which is a difference of   19.6
between   9 to 11 the heart rate went from 105.3 to 115
which is a difference of  9.8
and since 5 to 9 was in 4 units of time while  9 to 11 was in 2
19.6/2 = 9.8
9.8 = 9.8
therefore the parent function would be a linear function...