(30 points!) Which equation of the least squares regression line most closely matches the data set?
 
Data Set below
x y
4 30
6 38
8 44
10 50
12 55


1. y=1.13x−14.69

2. y=3.1x+18.6

3. y=0.32x−5.89

4. y=0.59x+3.29