A collection of n pairs of (x,y) values where each "x" represents the height of a 10-yrear-old boy (in inches) and "y" represents his weight (in pounds), has produced: y=1.8x-7y=1.8x7 as the equation of the regression line. Which of the statements below are correct?

(Hint: there are 2 correct responses)

There exists a strong correlation between x and y.

The intercept of this regression line is meaningful.

x and y are negatively correlated.

The coefficient of determination is 1.8.

The slope of this regression line is meaningful.

x and y are positively correlated.