a. If the slope of a line is 3 and a point on the line is (1, -2), the y-intercept of the line is at the point with coordinates. Show your work. PLEASE HELP ASAP

a If the slope of a line is 3 and a point on the line is 1 2 the yintercept of the line is at the point with coordinates Show your work PLEASE HELP ASAP class=