Question 1119844
2004, 0 known
2007, 27%
2015, 49%
This becomes (0, 27) and (8, 49)
point-slope formula y-y1=m(x-x1) m slope (x1, y1) a point.  Slope is 22/8 or 11/4
y-27=(11/4)x
y=2.75x+27 ANSWER
in 2007, x=0 and y=27
in 2015, x=8 and y=49