Have you plotted the points using a scatterplot?
I would say the correlation is negative and do you mean the missing y-value?
from the table x = 1,2,3,4 and y= -1/4, -1/2, -3/4 and ? ( in table format)
1 ( -1/4)
2 ( -1/2)
3 ( -3/4)
4 ( ?)
1. would the correlation between x and y be positive or negative?
2. what is the missing value of x?
3. how would the values of this table be intrepreted in terms of linear regression?
4. if a 'line of best fit' is placed among these points plotted on a coordinate system, would the slope be positive or negative?