The two regression lines of a bivariate distribution are:
4 – 5 + 33 = 0 (line of y on x) 20 – 9 – 107 = 0 (line of x on y).
Estimate the value of when = 7. Compute the correct answer to one decimal place.

Output Format
In the text box, enter the floating point/decimal value required. Do not lead any leading or trailing spaces. Your answer may look like: 7.2

This is NOT the actual answer - just the format in which you should provide your answer.