4)
3xt
+ 4y + s = 0, y = 244
Solve by
graphical method
Answers
Answer:3x−y=4 ----- (1)
7x+2y=18 ----- (2)
From equation (1) assume the value of x and y to satisfy the equation to zero.
3x−y−4=0 ------ (3)
Put x=0,y=−4 in equation (3)
3(0)−(−4)−4=0
4−4=0
0=0
Again put x=2,y=2 in equation (3)
3(2)−(2)−4=0
6−2−4=0
6−6=0
0=0
Now plotting (0, -4), (2, 2) and joining them, we get a straight line.
From equation (2) assume the value of x and y to satisfy the equation to zero.
7x+2y−18=0 ----- (4)
Put x=0,y=9 in equation (4)
7(0)+2(9)−18=0
18−18=0
0=0
Again put x=2,y=2 in equation (4)
7(2)+2(2)−18=0
14+4−18=0
18−18=0
0=0
Plotting (0, 9), (2, 2) and joining them, we get another straight line.
These lines intersect at the point (2, 2) and therefore the solution of the equation is x=2,y=2.
Step-by-step explanation: