UPSC NDA I 2018 Mathematics Solved Paper

Consider the following statements:
1. If the correlation coefficient 𝑟𝑥𝑦=0, then the two lines of regression are parallel to each other.
2. If the correlation coefficient 𝑟𝑥𝑦=+1 , then the two lines of regression are perpendicular to each other. Which of the above statements is/are correct?