Find the products `(x+7y) (7x-y)`

Find the product of (5x - y +z) (5x - y +z)

Find a relation between x and y if the points (x, y), (1, 2) and (7, 0) are collinear.

Find a relation between x and y if the points (x, y), (1, 2) and (7, 0) are collinear.

Reduce the following equations into slope - intercept form and find their slopes and the y-intercepts. (i) x + 7y = 0 , " " (ii) 6x + 3y - 5 = 0 , " " (iii) y = 0

Find the image of the (-2,-7) under the transformations (x,y) to (x-2y,-3x+y).

Find the greatest value of x^3y^4 if 2x + 3y = 7 and x>=0,y>=0 .

Find the relation between x and y such that the point (x , y) is equidistant from the points (7, 1) and (3, 5).

Find whether the following pair of linear equations has a unique solution. If yes, find the solution : 7x-4y=49, 5x-6y=57

Find x and y if (x+7,5) = (6,3x+y)

Prove that the following lines are concurrent also find the point of concurrency. 3x-4y+5=0 " ...(1)" 7x-8y+5=0 " ...(2)" " "4x+5y=45 " ...(3)"