I have this question... I've been given the answer but I'm not sure why that's the answer. So I have this regression equation that is

Y = 20.3 − 5.4X. The questions asks what the correlation between the two is (an answer is not expected) and I know that it's negative and close to -0.1. I know that the correlation is negative because the slope (b) is negative but how do you know that the correlation is strong, moderate or weak? Like how can you tell just from looking at the equation?

Thanks in advance ,

Anna