Question

2x - 5y = 0 x + y = 0 solve graphically.​

Answer 1

Answer:

Correct option is

C

(5, -2)

x−5y=15 ----- (1)

2x+5y=0 ----- (2)

From equation (1) assume the value of x and y to satisfy the equation to zero.

x−5y−15=0 ------ (3)

Put x=0,y=−3 in equation (3)

0−5(−3)−15=0

15−15=0

0=0

Again put x=5,y=−2 in equation (3)

5−5(−2)−15=0

5+10−15=0

15−15=0

0=0

Now plotting (0,−3),(5,−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.

Put x=5,y=−2 in equation (2)

2x+5y=0

2(5)+5(−2)=0

10−10=0

0=0

Again put x=0,y=0 in equation (2)

2(0)+5(0)=0

0+0=0

0=0

Plotting (5,−2),(0,0) and joining them, we get another straight line.

These lines intersect at the point (5,−2) and therefore the solution of the equation is x=5,y=−2

solution