Terra has been working on the time it takes her to run a mile. she recorded the time it takes her to run a mile in the table shown below, where x represents the number of months since she started recording her time, and y represents the time it takes terra to run a mile, in seconds.
table
0 1 2 3 4 5
610 600 590 580 570 560
interpret the y-intercept.
a.
it took terra 610 seconds to run a mile when she started recording her time.
b.
it took terra 640 seconds to run a mile when she started recording her time.
c.
it took terra 560 seconds to run a mile when she started recording her time.
d.
it took terra 620 seconds to run a mile when she started recording her time.