Equations of two lines of regression are 4x+3y+7 = 0 and 3x+ 4y + 8 = 0, themean of x and y are(a) 5/7 and 6/7(b) – 4/7 and –11/7(c) 2 and 4(d) None of these
Question
Solution 1
The equations of two lines of regression are given as 4x + 3y + 7 = 0 and 3x + 4y + 8 = 0.
The mean of x and y can be found by solving these two equations simultaneously.
Step 1: Rewrite the equations in the form y = mx + c
For the first equation: 3y = -4x - 7, so y = -4/3x - 7/3
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