(a) Figure 1 shows two points A and B with a straight line drawn through them. y 61 A -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 -1 3 B -4 -5 Figure 1 (i) Write down the coordinates of the points A and B. [1] (ii) Find the gradient of the line that passes through the points A and B, clearly showing each step of your method. [2] (b) (i) Find the equation of the line that passes through the point (-2,4) and has slope [3] (ii) Determine whether or not the point (3, 6) lies on the line found in part (b)(i), clearly showing each step of your method. [2] (iii) Find the r-intercept of the line found in part (b)(i), clearly showing each step of your method. [2]