y=0.7x+18.678   是这个公式对么？sig值有两个0.22和0.002，检验是否通过？是不是要两个检验都通过了才行？

方程是y=0.7x+18.678   
0.22是18.678的显著性
0.002是0.7的显著性
可见两个数字都显著地进入了方程

your predictor is significant but the intercept is not; generally speaking, your final regression equation should inlclude the intercept item whether or not it is significant or not.