From the given table, the points can be written as : (6,7.55) , (12,7.85), (18, 8.15) and (24, 8.45)
Slope [tex]m=\frac{_{y2}-_{y1}}{_{x2}-_{x1}}[/tex]
m = [tex]\frac{7.85-7.55}{12-6}[/tex]
m = 0.05
slope intercept form of line = [tex]y=mx+c[/tex]
We plug m = 0.05, x = 6 and y = 7.55 and find c.
[tex]7.55=0.05(6)+c[/tex]
c= 7.25
Required equation: [tex]y=0.05x+7.25[/tex] ... Answer