The graph of 3x + 4y - 24 = 0 forms a triangle OAB with the coordinate axes, where O is the origin. Also, the graph of x + y + 4 = 0 forms a triangle OCD with the coordinate axes. Then the area of ∆ OCD is equal to: 

For what value of k, the system of equations kx + 2y = 2 and 3x + y = 1 will be coincident? 

Find the area of quadrilateral formed by joining points (4,2), (8,2), (8,14) and (4,10). 

Area of the triangle formed by the graph of the straight lines x - y = 0, x + y = 2 and the x-axis is: 

The graphs of x = a and y = b intersect at 

The linear equation such that each point on its graph has an ordinate four times its abscissa is: 

If (2^x)(2^y) = 8 and (9^x)(3^y) = 81 , then ( x , y ) is : 

If a linear equation is of the form x = k, where k is a constant, then graph of the equation will be