Question

Solve graphically the system from of pair of linear equation.
(a) x+y=3, 3x-2y=4
(b) 2x+4y=10, 3x+6y=12
(c) 3x-y=2, 9x-3y=6
(d) x+3y=6, 2x-3y=12​

Answer 1

Answer:

(a) This pair of linear equation has unique solution because their lines in the graph cuts at a unique point

i.e. (x,y) = ( 2,1)

(b)This pair of linear equation has no solution because the lines of equation are parallel drawn in the graph .

(c) This pair of linear equation has no solution because the lines of ewuations are parallel drawn in the graph .

(d)This pair of linear equation has unique solution because their lines in the graph cuts at a unique point.

i.e. (x,y)= (6,0)