Question

Solve graphically: 2x - y = 7 and x - 2y = 5.

Answer 1

Answer:

2x - y = 7

X - 2y = 5

2x - y = 7

2(X - 2y = 5)

2x - y = 7

2x - 2y = 10

2x - y = 7

-2x + 2y = -10

y = -3

X - 2y = 5

X - 2(-3) = 5

X +6 = 5

X = 5-6

X = -1

Answer 2

Step-by-step explanation:

2x-y=7(multiply with 2 )

tthen

4x-2y=14.

subtract x-2y=5 from the above..

then we get 3x=9

x=9/3 =3

then find y..

2x- y=7

2*3-y=7

6-y=7

-y=7-6

y=-1