Question

Solve the pair of linear equation graphically :x_2y=0 and 3x+4y=20

Answer 1

Explanation:

See answer in above picture

Answer 2

Answer:

y=2 x=4

Explanation:

$x - 2y = 0 \: \: eq1$

$3x + 4y = 20 \: \: eq2$

multiplying eq1 by 3

therefore

$3x - 2y = 0 \: \: eq3$

subtracting eq3 from eq1

(see from photo)

putting value of y in eq1 we get x=4