The y-intercept is 5 and the slope is -2. I know this because (0, 5) is when the long crosses the y-axis and it is going down 2 over to the left 1 which makes the slope -2.
Use the slope formula to find the slope of a line given the coordinates of two points on the line. The slope formula is m=(y2-y1)/(x2-x1), or the change in the y values over the change in the x values. The coordinates of the first point represent x1 and y1. The coordinates of the second points are x2, y2.