Identify the fixed and variable components of costs from your regression. How do I know if the regression information is reliable?

Hawaiian Airlines vs Spirit Airlines

What is the difference between the Y-Intercept and X-Intercept? What does it mean that one Y-Intercept is negative and the other positive?

What is different between these regression models? How are they the same/similar, if at all?

 
 

SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square Standard Error 0.981684171 0.963703812 0.962053986 132769960.5 Observations 24 ANOVA Significance F 2.46386E-17 df SS MS F |Regression 1 1.02969E+19 1.02969E+19 584.124264 Residual 22 3.87813E+17 1.76279E+16 Total 23 1.06847E+19 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0% Intercept -1128499956 97995358.94 -11.51585104 8.73083E-11 -1331729892 -925270020.2 -1331729892 -925270020.2 X Variable 1 300.4430646 12.43109999 24.16866285 2.46386E-17 274.6625411 326.223588 274.6625411 326.223588