Mathematics Statistics Correlation and Regression

It is given that X̅ = 10, Y̅ = 90, σX = 3, σY = 12 and rXY = 0.8. The regression equation of X on Y is 

1
Y = 3.2X + 58
2
X = 3.2Y + 58
3
X = - 8 + 0.2Y
4
Y = - 8 + 0.2X

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