Graphing functions (a) Find the equation of the straight line which: (i)has a slope of 4 and passes through the point (2,3), (ii) is parallel to the line y5x and

goes through the point (1,1), (iii)Crosses the axes at x =1 and y = 5. (b) Sketch the following function, noting and stating the coordinates for anypoints where they cross the axes and for any turning point (minimum ormaximum) possessed by the function: y=-4 x^{2}+3 x+1 ) Find the equation of the circle that passes through (-1,3), (1,-1) and (2,2)