Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting :
`4x+7y = 19, 7x-4y=-2`.

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : x-2y=7,4y-2x=13 .

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : 5x - 2y = 7, 2y -5x=-7 .

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : 3x- 4y = 8, 3x + 4y = 11 .

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : 6x+14y-16 =0, 12x + 28y - 32 =0 .

On comparing the ratios (a_1)/(a_2), (b_1)/b_2 and (c_1)/(c_2) find out whether the lines representing the following pairs of linear equations intersect at point, are parallel or coincident : 5x-4y+8=0 7x+6y-9=0 .

On comparing the ratios (a_1)/(a_2), (b_1)/(b_2), (c_1)/(c_2) and without drawing them, find out whether the lines representing the following pairs of linear equations intersect at a point, are parallel or coincide. Also, find out whether the following pair of linear equations are consistent or inconsistent : 5x+2y=16 7x-4y=2.

Find the equation of a line that has x-intercept 3 and perpendicular to the line x -7y + 5 = 0.

Classify the following system of equations as consistent or inconsistent: {:(5x-6y+4z=15),(7x+4y-3z=19),(2x+y+6z=46):}

On comparing the ratios (a_1)/(a_2), (b_1)/(b_2), (c_1)/(c_2) and without drawing them, find out whether the lines representing the following pairs of linear equations intersect at a point, are parallel or coincide. Also, find out whether the following pair of linear equations are consistent or inconsistent : 3x-4y=-7 3x-4y=-9 .

Solve the following pair of linear equations by cross multiplication method : 4x+7y=10 , 10x- 35/2 y = 25 .