The equation of the regression line for the paired data below is y = 3x and the standard error of the estimate is se = 2.2361. find the 90% prediction interval of y for x = 3. x 2 4 5 6 y 7 11 13 20

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?