emily3915 emily3915 29-02-2024 Mathematics contestada Identify the values of the y-intercept (a) and the slope (b), and sketch the following regression lines for values of x between 0 and 10. 1) tildey = 7 + 0.5x 2) tildey = 7 + x 3) tildey = 7 - x 4) tildey = 7