Question 1: A straight line pass through (4,1) and cuts the axes at A and B. If OA=OB, find the equation of the line. Question 2: The line 3x-4y-12=0 touches a circle with centre (-1,5) .Find the radius of that circle. Question 3: The line (3+k)x+(2k-1)y=5k+1 passes through a fixed point P for any value of k.Find the coordinate of P. Question 4: Find the equations of two lines which are concurrent with the lines 2x-3y+1=0 and x+2y-3=0. One of them has a slope of 3 and the other passes through the point (2,-1). Find also the acute angle between the required lines._________________

1+1= 2 or 1+1=11 (rejected)