calculate the slope and intercept for the line of best fit for pick number vs career length and for pick number vs salary. assign these values to career length slope, career length intercept, salary slope, and salary intercept respectively. the function parameters returns a two-item array containing the slope and intercept of a linear regression line. hint 1: use the parameters function with the arguments specified! hint 2: remember we're predicting career length and salary based off a pick number. that should tell you what the colx and coly arguments you should specify when calling parameters.